Building Dreams!
One Brick At A Time With LEGO

Discover the magic of Cat Birthday Party & Tree House from the Friends collection. Where creativity meets imagination.

Cat Birthday Party & Tree House
LEGO® Friends

Cat Birthday Party & Tree House

Set #42666

321
Pieces
2025
Year
2
Minifigures

Investment Analysis

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Complete Specifications

Theme Friends

Parts Parts Inventory

All 108 unique parts • Total pieces: 313

Plant, Plate 1 x 1 Round with 3 Leaves
Plant, Plate 1 x 1 Round with 3 Leaves
Part #: 32607 Color: Yellowish Green Category: 76
25×
Plant, Leaves 4 x 3
Plant, Leaves 4 x 3
Part #: 2423 Color: Lime Category: 76
Technic Axle 2 Notched
Technic Axle 2 Notched
Part #: 32062 Color: Red Category: 46
Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end
Brick Round 1 x 1 diameter Tube with 90 Degree Elbow (2 x 2 x 1) and Axle Holes (Crossholes) at each end
Part #: 25214 Color: Tan Category: 20
Equipment Candlestick
Equipment Candlestick
Part #: 37762 Color: Reddish Brown Category: 27
Plant, Stem with 3 Leaves and Bottom Pin
Plant, Stem with 3 Leaves and Bottom Pin
Part #: 37695 Color: Bright Green Category: 76
Tile Round 1 x 1 with Animal Track Print
Tile Round 1 x 1 with Animal Track Print
Part #: 98138pr0056 Color: Medium Nougat Category: 67
Cone 1 x 1 [Top Groove]
Cone 1 x 1 [Top Groove]
Part #: 59900 Color: Tan Category: 20
Technic Axle Connector Smooth [with x Hole + Orientation]
Technic Axle Connector Smooth [with x Hole + Orientation]
Part #: 59443 Color: Tan Category: 12
Plate 1 x 2
Plate 1 x 2
Part #: 3023 Color: Dark Orange Category: 14
Plate Special 2 x 2 with Groove and Center Stud (Jumper)
Plate Special 2 x 2 with Groove and Center Stud (Jumper)
Part #: 87580 Color: Medium Azure Category: 9
Brick 1 x 1
Brick 1 x 1
Part #: 3005 Color: Medium Azure Category: 11
Plate Round 1 x 1 with Solid Stud
Plate Round 1 x 1 with Solid Stud
Part #: 6141 Color: Bright Pink Category: 21
Plate Special 2 x 4 with Groove and Two Center Studs (Jumper)
Plate Special 2 x 4 with Groove and Two Center Studs (Jumper)
Part #: 65509 Color: Bright Green Category: 9
Plant, Plate 1 x 1 Round with 3 Leaves
Plant, Plate 1 x 1 Round with 3 Leaves
Part #: 32607 Color: Bright Green Category: 76
Bar 2L with Stop in Center
Bar 2L with Stop in Center
Part #: 78258 Color: Tan Category: 32
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small
Animal Body Part, Barb / Claw / Tooth / Talon / Horn, Small
Part #: 53451 Color: Bright Green Category: 75
Plant, Flower, Plate Round 1 x 1 with 5 Petals
Plant, Flower, Plate Round 1 x 1 with 5 Petals
Part #: 24866 Color: Bright Green Category: 76
Tile 1 x 2 with Groove
Tile 1 x 2 with Groove
Part #: 3069b Color: Medium Azure Category: 19
Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm]
Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm]
Part #: 88072 Color: Tan Category: 9
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)
Part #: 18674 Color: Dark Pink Category: 9
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)
Part #: 4032a Color: Bright Pink Category: 21
Brick 1 x 2
Brick 1 x 2
Part #: 3004 Color: Dark Orange Category: 11
Brick 1 x 2
Brick 1 x 2
Part #: 3004 Color: Coral Category: 11
Brick 1 x 1
Brick 1 x 1
Part #: 3005 Color: Bright Light Orange Category: 11
Brick 1 x 1
Brick 1 x 1
Part #: 3005 Color: Coral Category: 11
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)
Part #: 18674 Color: Bright Green Category: 9
Cylinder Half 2 x 4 x 4
Cylinder Half 2 x 4 x 4
Part #: 6259 Color: Tan Category: 20
Plate Special 1 x 2 with Door Rail
Plate Special 1 x 2 with Door Rail
Part #: 32028 Color: Tan Category: 9
Technic Axle Connector Hub with 3 Axles at 120°
Technic Axle Connector Hub with 3 Axles at 120°
Part #: 57585 Color: Light Bluish Gray Category: 12
Flag 2 x 2 Square, Flared Clip Edge [Thick Clips]
Flag 2 x 2 Square, Flared Clip Edge [Thick Clips]
Part #: 80326 Color: White Category: 38
Plant, Leaves Stacked 4 x 5 x 1 2/3
Plant, Leaves Stacked 4 x 5 x 1 2/3
Part #: 5058 Color: Lime Category: 76
Container Box 2 x 2 x 1 Reinforced Bottom
Container Box 2 x 2 x 1 Reinforced Bottom
Part #: 2821 Color: Bright Pink Category: 7
Plate 1 x 10
Plate 1 x 10
Part #: 4477 Color: Medium Azure Category: 14
Brick Special 1 x 2 with Grille
Brick Special 1 x 2 with Grille
Part #: 2877 Color: Tan Category: 5
Brick 1 x 2
Brick 1 x 2
Part #: 3004 Color: Bright Light Orange Category: 11
Bar 2L with Stop in Center
Bar 2L with Stop in Center
Part #: 78258 Color: Reddish Brown Category: 32
Bar Holder with Clip
Bar Holder with Clip
Part #: 11090 Color: White Category: 32
Slope Curved 2 x 1 No Studs [1/2 Bow]
Slope Curved 2 x 1 No Studs [1/2 Bow]
Part #: 11477 Color: Bright Green Category: 37
Brick Arch 1 x 5 x 4 [Continuous Bow, Raised Underside Cross Supports]
Brick Arch 1 x 5 x 4 [Continuous Bow, Raised Underside Cross Supports]
Part #: 14395 Color: Tan Category: 37
Brick Round 2 x 2 Dome Bottom [Open Stud]
Brick Round 2 x 2 Dome Bottom [Open Stud]
Part #: 15395 Color: Bright Pink Category: 20
Tile Round 1 x 2 Half Circle
Tile Round 1 x 2 Half Circle
Part #: 1748 Color: Medium Azure Category: 67
Brick Arch 1 x 3 x 2 Inverted [Inside Bow]
Brick Arch 1 x 3 x 2 Inverted [Inside Bow]
Part #: 18653 Color: Medium Azure Category: 37
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)
Plate Special Round 2 x 2 with Center Stud (Jumper Plate)
Part #: 18674 Color: Blue Category: 9
Large Figure Weapon Lightsaber Hilt with Axle Hole and Two Bar Holders
Large Figure Weapon Lightsaber Hilt with Axle Hole and Two Bar Holders
Part #: 24122 Color: Reddish Brown Category: 12
Tile 1 x 4 with Groove
Tile 1 x 4 with Groove
Part #: 2431 Color: Bright Green Category: 19
Plant, Flower, Plate Round 1 x 1 with 5 Petals
Plant, Flower, Plate Round 1 x 1 with 5 Petals
Part #: 24866 Color: Lavender Category: 76
Plant, Flower, Plate Round 1 x 1 with 5 Petals
Plant, Flower, Plate Round 1 x 1 with 5 Petals
Part #: 24866 Color: Bright Light Yellow Category: 76
Tile 2 x 3
Tile 2 x 3
Part #: 26603 Color: Blue Category: 19
Tile 2 x 2 Curved, Macaroni
Tile 2 x 2 Curved, Macaroni
Part #: 27925 Color: Coral Category: 67
Brick 1 x 4
Brick 1 x 4
Part #: 3010 Color: Medium Azure Category: 11
Plate 2 x 4
Plate 2 x 4
Part #: 3020 Color: Orange Category: 14
Plate 6 x 10
Plate 6 x 10
Part #: 3033 Color: Lime Category: 14
Bar 4L (Lightsaber Blade / Wand)
Bar 4L (Lightsaber Blade / Wand)
Part #: 30374 Color: White Category: 32
Tile 2 x 2 with Groove
Tile 2 x 2 with Groove
Part #: 3068b Color: Bright Pink Category: 19
Tile 1 x 2 with Groove
Tile 1 x 2 with Groove
Part #: 3069b Color: Dark Turquoise Category: 19
Tile 1 x 2 with Cat Food Box, Cat, White 'MEOW BITS' print
Tile 1 x 2 with Cat Food Box, Cat, White 'MEOW BITS' print
Part #: 3069bpr9932 Color: Light Aqua Category: 19
Slope Curved 2 x 2 x 2/3 Inverted
Slope Curved 2 x 2 x 2/3 Inverted
Part #: 32803 Color: Bright Light Blue Category: 37
Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip]
Bar 1L with Clip [Cut Edges and One Side Hole] [Full Clip]
Part #: 3484 Color: Reddish Brown Category: 32
Plate Special 1 x 2 Rounded with 2 Open Studs
Plate Special 1 x 2 Rounded with 2 Open Studs
Part #: 35480 Color: Bright Green Category: 21
Brick 1 x 3
Brick 1 x 3
Part #: 3622 Color: White Category: 11
Plate 1 x 4
Plate 1 x 4
Part #: 3710 Color: Bright Green Category: 14
Brick Curved 1 x 2 x 1 No Studs
Brick Curved 1 x 2 x 1 No Studs
Part #: 37352 Color: Tan Category: 37
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)
Part #: 4032a Color: Medium Azure Category: 21
Brick Special 1 x 1 with Headlight
Brick Special 1 x 1 with Headlight
Part #: 4070 Color: Bright Light Blue Category: 5
Dish 2 x 2 Inverted [Radar]
Dish 2 x 2 Inverted [Radar]
Part #: 4740 Color: Blue Category: 21
Plant, Leaves Stacked 4 x 5 x 1 2/3
Plant, Leaves Stacked 4 x 5 x 1 2/3
Part #: 5058 Color: Bright Green Category: 76
Slope 30° 1 x 1 x 2/3 (Cheese Slope)
Slope 30° 1 x 1 x 2/3 (Cheese Slope)
Part #: 54200 Color: Bright Light Blue Category: 3
Brick Round 2 x 2 Dome Top with 2 Ears
Brick Round 2 x 2 Dome Top with 2 Ears
Part #: 5690 Color: Bright Pink Category: 20
Plant, Flower, Peony Rose with 2 Layers
Plant, Flower, Peony Rose with 2 Layers
Part #: 5904 Color: Medium Lavender Category: 76
Plate Round Corner 6 x 6
Plate Round Corner 6 x 6
Part #: 6003 Color: Blue Category: 21
Brick Curved 2 x 1 with Inverted Cutout
Brick Curved 2 x 1 with Inverted Cutout
Part #: 78666 Color: Bright Light Orange Category: 37
Brick Curved 2 x 1 with Inverted Cutout
Brick Curved 2 x 1 with Inverted Cutout
Part #: 78666 Color: Coral Category: 37
Panel 1 x 2 x 3 [Side Supports / Hollow Studs]
Panel 1 x 2 x 3 [Side Supports / Hollow Studs]
Part #: 87544 Color: White Category: 23
Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm]
Plate Special 1 x 2 with Bar Up [Horizontal Arm 5mm]
Part #: 88072 Color: Green Category: 9
Tile Round 1 x 1 with Offset Black Eye Print
Tile Round 1 x 1 with Offset Black Eye Print
Part #: 98138pr0008 Color: White Category: 67
Wave / Flame Small with Pin
Wave / Flame Small with Pin
Part #: 37775 Color: Trans-Orange Category: 69
Equipment Shovel [Rounded Handle End]
Equipment Shovel [Rounded Handle End]
Part #: 3837 Color: Flat Silver Category: 27
Antenna 1 x 4 with Flat Top
Antenna 1 x 4 with Flat Top
Part #: 3957b Color: Dark Orange Category: 32
Brick 2 x 3
Brick 2 x 3
Part #: 3002 Color: Dark Orange Category: 11
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)
Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening)
Part #: 4032a Color: Medium Nougat Category: 21
Plate 1 x 1 x 2/3 with Open Stud
Plate 1 x 1 x 2/3 with Open Stud
Part #: 86996 Color: Dark Orange Category: 14
Brick Round 4 x 4 Centre Hole
Brick Round 4 x 4 Centre Hole
Part #: 87081 Color: Yellow Category: 20
Plate 8 x 8 with Rounded End
Plate 8 x 8 with Rounded End
Part #: 41948 Color: Magenta Category: 21
Technic Pin 1/2
Technic Pin 1/2
Part #: 4274 Color: Light Bluish Gray Category: 53
Container Box 2 x 2 x 1 Reinforced Bottom
Container Box 2 x 2 x 1 Reinforced Bottom
Part #: 2821 Color: Bright Light Orange Category: 7
Tile Round 1 x 1
Tile Round 1 x 1
Part #: 98138 Color: Trans-Yellow Category: 67
Dish 2 x 2 Inverted [Radar]
Dish 2 x 2 Inverted [Radar]
Part #: 4740 Color: Trans-Light Blue Category: 21
Brick Special 1 x 1 with Studs on 2 Sides
Brick Special 1 x 1 with Studs on 2 Sides
Part #: 47905 Color: Blue Category: 5
Plate Special 2 x 2 with Groove and Center Stud (Jumper)
Plate Special 2 x 2 with Groove and Center Stud (Jumper)
Part #: 87580 Color: Yellow Category: 9
Turntable 2 x 2 Female
Turntable 2 x 2 Female
Part #: 27448 Color: White Category: 18
Wedge Plate 2 x 4
Wedge Plate 2 x 4
Part #: 51739 Color: Blue Category: 49
Plate Round 1 x 1 Swirled Top / Poo
Plate Round 1 x 1 Swirled Top / Poo
Part #: 53119 Color: Reddish Brown Category: 21
Animal, Cat, Chubby with Bright Green Eyes, Light Bluish Grey Fur print
Animal, Cat, Chubby with Bright Green Eyes, Light Bluish Grey Fur print
Part #: 2652pr0007 Color: Dark Bluish Gray Category: 28
Plate Special 2 x 2 with Groove and Center Stud (Jumper)
Plate Special 2 x 2 with Groove and Center Stud (Jumper)
Part #: 87580 Color: Bright Pink Category: 9
Headwear Accessory Bow with Heart, Long Ribbon and Pin
Headwear Accessory Bow with Heart, Long Ribbon and Pin
Part #: 11618 Color: Lavender Category: 72
Animal, Cat, Chubby with orange Face, Toes, Medium Blue/Lime Eyes print
Animal, Cat, Chubby with orange Face, Toes, Medium Blue/Lime Eyes print
Part #: 2652pr0003 Color: White Category: 28
Bar 5L with Handle (Friction Ram)
Bar 5L with Handle (Friction Ram)
Part #: 87618 Color: Black Category: 32
Headwear Accessory Hat with Small Pin, Clown / Party with Pin
Headwear Accessory Hat with Small Pin, Clown / Party with Pin
Part #: 24131 Color: Pearl Gold Category: 72
Bar Holder with Hole and Bar Handle
Bar Holder with Hole and Bar Handle
Part #: 23443 Color: Reddish Brown Category: 32
Cone 1 x 1 [Top Groove]
Cone 1 x 1 [Top Groove]
Part #: 59900 Color: Trans-Light Blue Category: 20
Plate Special 1 x 2 with Clip Horizontal on Side
Plate Special 1 x 2 with Clip Horizontal on Side
Part #: 11476 Color: White Category: 9
Plate Round Corner 6 x 6
Plate Round Corner 6 x 6
Part #: 6003 Color: Lime Category: 21
Window 1 x 4 x 3 without Shutter Tabs
Window 1 x 4 x 3 without Shutter Tabs
Part #: 60594 Color: White Category: 16
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side
Brick Special 1 x 2 x 1 2/3 with 4 Studs on 1 Side
Part #: 22885 Color: Dark Turquoise Category: 5
Plate Round 1 x 1 with Solid Stud
Plate Round 1 x 1 with Solid Stud
Part #: 6141 Color: Trans-Light Blue Category: 21
Brick Arch 1 x 4 x 2
Brick Arch 1 x 4 x 2
Part #: 6182 Color: Coral Category: 37
Plant, Flower with 5 Pointed Petals and Pin
Plant, Flower with 5 Pointed Petals and Pin
Part #: 18853 Color: Light Aqua Category: 76
Animal, Fish [Hollow Stud Mouth]
Animal, Fish [Hollow Stud Mouth]
Part #: 64648 Color: Bright Light Blue Category: 28
Plate Round 1 x 2 Half Circle with Stud (Jumper)
Plate Round 1 x 2 Half Circle with Stud (Jumper)
Part #: 1745 Color: Blue Category: 9
Wool / Yarn
Wool / Yarn
Part #: 6900 Color: Dark Pink Category: 27
Wool / Yarn
Wool / Yarn
Part #: 6900 Color: Bright Light Yellow Category: 27
Headwear Accessory Hat with Small Pin, Cap
Headwear Accessory Hat with Small Pin, Cap
Part #: 6913 Color: Lime Category: 72
Animal, Cat, Kitten Sitting with Open Eyes, White Mouth, Nougat Paws print
Animal, Cat, Kitten Sitting with Open Eyes, White Mouth, Nougat Paws print
Part #: 69902pr0003 Color: Nougat Category: 28
Animal, Cat, Kitten Sitting with Yellow Eyes, Dark Pink Tongue print
Animal, Cat, Kitten Sitting with Yellow Eyes, Dark Pink Tongue print
Part #: 69902pr0004 Color: Black Category: 28
Plate Special 2 x 2 x 2/3 with Axle Hole and Grill on Sides (Haybale)
Plate Special 2 x 2 x 2/3 with Axle Hole and Grill on Sides (Haybale)
Part #: 71752 Color: Tan Category: 9
Hose Rigid 3mm D. 9L / 7.2cm
Hose Rigid 3mm D. 9L / 7.2cm
Part #: 75c09 Color: Black Category: 30
Plate Special 1 x 2 with Clip Vertical on End
Plate Special 1 x 2 with Clip Vertical on End
Part #: 78256 Color: Reddish Brown Category: 9
Bar 2L with Stop in Center
Bar 2L with Stop in Center
Part #: 78258 Color: White Category: 32
Tile 2 x 2 with Groove
Tile 2 x 2 with Groove
Part #: 3068b Color: Bright Light Orange Category: 19
Plate 2 x 2
Plate 2 x 2
Part #: 3022 Color: Light Bluish Gray Category: 14
Brick Arch 1 x 6 x 2 - Thin Top without Reinforced Underside [New Version]
Brick Arch 1 x 6 x 2 - Thin Top without Reinforced Underside [New Version]
Part #: 15254 Color: Medium Azure Category: 37
Plate Round 1 x 1 with Hollow Stud and Horizontal Bar 1L
Plate Round 1 x 1 with Hollow Stud and Horizontal Bar 1L
Part #: 32828 Color: Black Category: 9
Slope 33° 3 x 2
Slope 33° 3 x 2
Part #: 3298 Color: Reddish Brown Category: 3
Headwear Accessory Crown / Tiara
Headwear Accessory Crown / Tiara
Part #: 33322 Color: Pearl Gold Category: 72
Sticker Sheet for Set 42666-1
Sticker Sheet for Set 42666-1
Part #: 10113040 Color: [No Color/Any Color] Category: 58
Plate Special 4 x 4 with 3 x 3 Quarter Round Cutout
Plate Special 4 x 4 with 3 x 3 Quarter Round Cutout
Part #: 35044 Color: Yellow Category: 21
Plate Special 4 x 4 with 3 x 3 Quarter Round Cutout
Plate Special 4 x 4 with 3 x 3 Quarter Round Cutout
Part #: 35044 Color: Bright Pink Category: 21
Animal, Cat, Sitting with Dark Brown Stripes, White Chest, Ears print
Animal, Cat, Sitting with Dark Brown Stripes, White Chest, Ears print
Part #: 11602pr0010 Color: Medium Brown Category: 28
Plate Special 1 x 2 Rounded with 2 Open Studs
Plate Special 1 x 2 Rounded with 2 Open Studs
Part #: 35480 Color: Tan Category: 21
Cupboard 2 x 3 x 2 with Hollow Studs
Cupboard 2 x 3 x 2 with Hollow Studs
Part #: 92410 Color: Blue Category: 7
Brick Arch 1 x 4
Brick Arch 1 x 4
Part #: 3659 Color: Bright Light Orange Category: 37
Technic Brick 1 x 2 [1 Pin Hole]
Technic Brick 1 x 2 [1 Pin Hole]
Part #: 3700 Color: Reddish Brown Category: 8
String with End Studs 11L Overall
String with End Studs 11L Overall
Part #: 14226c11 Color: Black Category: 31
Brick Special 1 x 2 with 1 Center Stud on 1 Side, Bottom Stud Holder
Brick Special 1 x 2 with 1 Center Stud on 1 Side, Bottom Stud Holder
Part #: 86876 Color: Bright Light Blue Category: 5
Plate 2 x 3
Plate 2 x 3
Part #: 3021 Color: Light Aqua Category: 14
Equipment Candlestick
Equipment Candlestick
Part #: 37762 Color: Black Category: 27
Plate 2 x 4
Plate 2 x 4
Part #: 3020 Color: Medium Lavender Category: 14

Charts Inventory Statistics

108
Unique Parts
313
Total Pieces
2
Minifigures
Inventory Version: 1

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