How many pieces are in the Birthday Cupcake?

Birthday Cupcake contains 174 pieces.

What age is the Birthday Cupcake recommended for?

This set is recommended for ages 7+.

When was the Birthday Cupcake released?

Birthday Cupcake was released in 2026.

1 / 5

🏛 Seasonal

Set #40905

Birthday Cupcake

Name: Birthday Cupcake
Brand: LEGO
SKU: 40905-1

The Birthday Cupcake is a delightful and customizable little set.

🏆 Best For: Ideal for kids aged 7+ who enjoy creative building and customization. ⏱ 1.5 hr build 🧩 174 pcs 🎂 Ages 7+

★★★★☆ 4.0

Fans appreciate the set's customizable nature and bright colors, making it a fun and engaging build for kids. Some feel the piece count is low for the price, but overall, it's considered a charming and worthwhile addition to a LEGO collection.

Check price on Amazon

📝 Our Take

The Birthday Cupcake is a delightful and customizable little set. It offers a fun, creative experience, allowing builders to personalize their LEGO birthday treat with a variety of colorful tiles and shapes.

This set is perfect for younger LEGO fans and those looking for a quick, enjoyable build. It makes an excellent small gift or party favor, and the customizable aspect adds to the play value.

Skip this if you're looking for a challenging or complex build. For more intricate LEGO models, consider sets from the Creator Expert or Technic lines.

✨ New

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🧱 Building Experience

🧩

174

Pieces

⏱

1.5h

Build Time

📊

Beginner

Difficulty

📏

10cm × 11cm × 8cm

Dimensions

Build Highlights:

Easy-to-follow instructions perfect for younger builders
Customizable design allows for unique and personalized creations
Bright and cheerful color scheme
Sturdy construction ensures the cupcake can be displayed without worry

📈 Investment Analysis

→ Price stable

C+

Investment Grade

⏳ Active

The Birthday Cupcake set has moderate investment potential. As a seasonal set, its availability might be limited, which could drive up its value after retirement. The low piece count and relatively common parts might limit significant appreciation, but its appeal as a gift item could sustain demand. Its small size and price point make it an accessible entry point for LEGO investing.

Not Financial Advice: Content is for educational purposes only. Past performance doesn't guarantee future results. Full disclaimer

📖 About This Set

Celebrate kids’ birthdays with the LEGO® Birthday Cupcake (40905) toy. This customizable birthday gift comes with a range of colorful tiles and shapes letting kids decorate their cake in lots of creative ways. This customizable small toy includes a chef minifigure holding a balloon animal that young builders can use to decorate the cupcake, as well as candles for their age. This is the ideal birthday gift for 7-year-old-plus girls and boys, or for kids who love baking. Set contains 174 pieces.

BIRTHDAY CUPCAKE TOY – The LEGO® Birthday Cupcake (40905) building set comes with a small toy cupcake with frosting tiles, a chef minifigure and lots of details for decoration
INCLUDES A MINIFIGURE AND ACCESSORIES – This fun building kit includes a chef minifigure, holding a cute balloon animal, and a ladder the chef can climb to decorate the top of the cupcake toy
CREATIVE DECORATIONS – The birthday toy comes with a range of colorful accessories that kids can use to customize their cupcake, including candles, tiles and even a cherry
DIGITAL BUILDING INSTRUCTIONS – The LEGO® Builder app guides kids on a building adventure that lets them zoom in and rotate sets using 3D instructions, as well as save and track their progress
BIRTHDAY GIFT IDEA FOR KIDS – The ideal birthday gift for girls, boys and kids ages 7-year-old-plus because the set comes with a total of 8 birthday candles
DIMENSIONS – This building set includes a cupcake toy that measures over 3 in. (10 cm) high, 4 in. (11 cm) wide and 3 in. (8 cm) deep

⚖ Compare Similar Sets

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Seasonal • 328 pcs

$12.99

Easter Rabbits Display

Compared to other seasonal LEGO sets, the Birthday Cupcake offers a unique customizable element. While sets like the Easter Bunny or Halloween Cat offer holiday-specific builds, this set is more versatile and can be displayed year-round. Its price point is similar to other small seasonal sets, making it a good alternative for those seeking a fun, affordable LEGO gift.

📦 Full Parts Inventory - 42 unique parts • 174 total pieces

Tile, Star with S...

Part #: 11609 4× Pearl Gold

Plate Special 1 x...

Part #: 15573 4× Bright Pink

Plate Special Rou...

Part #: 18674 1× Medium Azure

Brick Special 1 x...

Part #: 22885 2× White

Plant, Flower, Pl...

Part #: 24866 1× Green

Tile Round 1 x 1 ...

Part #: 25269 4× Medium Lavender

Tile Round 1 x 1 ...

Part #: 25269 4× Medium Nougat

Tile Round 1 x 1 ...

Part #: 25269 4× Yellow

Tile Round 1 x 1 ...

Part #: 25269 4× Lime

Tile Round 1 x 1 ...

Part #: 25269 4× Orange

Tile Round 1 x 1 ...

Part #: 25269 4× Medium Azure

Plate Special 1 x...

Part #: 2540 1× White

Brick 2 x 4

Part #: 3001 2× Bright Pink

Brick 1 x 2

Part #: 3004 4× Reddish Brown

Plate 2 x 4

Part #: 3020 2× White

Plate 2 x 4

Part #: 3020 4× Reddish Brown

Plate 2 x 2

Part #: 3022 2× Bright Pink

Plate 4 x 6

Part #: 3032 3× Reddish Brown

Slope 18° 4 x 2

Part #: 30363 4× Reddish Brown

Slope 45° 2 x 1 w...

Part #: 3040b 8× Reddish Brown

Brick Special 1 x...

Part #: 30414 4× Lime

Plate Round Corne...

Part #: 30565 4× Bright Pink

Brick Round 1 x 1...

Part #: 3062b 8× Medium Azure

Brick Round 2 x 2...

Part #: 3262 1× Red

Food Hot Dog / Sa...

Part #: 33078 1× Bright Green

Plate Special 1 x...

Part #: 35480 2× White

Plate Special 1 x...

Part #: 35480 2× Light Bluish Gray

Brick Curved 1 x ...

Part #: 3563 4× Reddish Brown

Balloon Dog

Part #: 35692 1× Trans-Dark Blue

Minifig Head Sall...

Part #: 3626cpr1635 1× Yellow

Plate 1 x 6

Part #: 3666 2× Medium Azure

Plate 1 x 6

Part #: 3666 2× Reddish Brown

Plate 1 x 4

Part #: 3710 6× Red

Plate 1 x 4

Part #: 3710 6× Medium Nougat

Wave / Flame Smal...

Part #: 37775 8× Trans-Orange

Hat, Chef / Baker

Part #: 3898 1× White

Tile 1 x 1 Heart

Part #: 39739 4× Red

Legs Short

Part #: 41879a 1× White

Plate Special 2 x...

Part #: 4304 4× Yellow

Wedge Sloped 4 x ...

Part #: 43710 4× Reddish Brown

Wedge Sloped 4 x ...

Part #: 43711 4× Reddish Brown

Dish 3 x 3 Invert...

Part #: 43898 1× White

Bar 7 x 3 with Do...

Part #: 5630 1× Yellow

Brick Curved 2 x ...

Part #: 5846 12× Bright Pink

Plate Round 1 x 1...

Part #: 6141 4× Dark Pink

Plate Round 1 x 1...

Part #: 6141 4× Yellow

Plate Special 4 x...

Part #: 64799 2× Light Bluish Gray

Brick Special 1 x...

Part #: 67329 4× Light Bluish Gray

Plate Round Corne...

Part #: 79491 6× White

Plate Special 2 x...

Part #: 87580 2× White

Brick and Axle Se...

Part #: 96874 1× Orange

Torso Chef with 8...

Part #: 973c27h01pr9999 1× White

The set offers a good selection of curved and rounded pieces in Bright Pink and Medium Azure, useful for MOC builders looking to add organic shapes and vibrant colors to their creations.

🛒 Where to Buy

💎 Notable Parts

Bright Pink Brick Curved 2 x 2 x 1 Curved Top, Corner (12x) $1.20

Trans-Orange Wave / Flame Small with Pin (8x) $1.60

Medium Azure Brick Round 1 x 1 Open Stud (8x) $0.80

Pearl Gold Tile, Star with Stud Holder, Pin Hole (4x) $1.00

Est. BrickLink Part Value

$4.60

💡 MOC Potential

🏙 Miniature bakery scene

🌳 Flower display using cupcake base

🏰 Small tower or turret

Community Insights

Real opinions from Reddit and YouTube

What Reddit Says

No Reddit discussions found for this set.

What YouTubers Say

Based on 7 videos

3.0 /5

Mixed

0% positive

BlockTalk AI

Overall sentiment towards the Birthday Cupcake (40905-1) is mixed, with reviews leaning neutral. ellieV's video showcases the set as a LEGO DOTS DIY craft, highlighting its cupcake-themed components. The overall impression is that it's a creative kit, but its true nature as a LEGO set is apparent.

Cupcake decorating (but with Lego) DIY craft

ellieV • 263.3K views Review

Community Sentiment

Based on 7 YouTube reviews

Not enough Reddit data

YouTube

3.0 /5

Mixed

0% positive

Positive

Mixed

Critical

BlockTalk AI Analysis

What the Community Says

1 YouTube reviews

BlockTalk AI Summary

ellieV presents the set as a cupcake decorating activity using LEGO elements, suggesting its appeal as a DIY craft. The review acknowledges the set's identity as a LEGO product despite its cupcake theme.

Reddit Reviews

No Reddit reviews found

YouTube Reviews

1 video

Cupcake decorating (but with Lego) DIY craft

ellieV

263.3K views Review

Community Content: These reviews are from Reddit and YouTube users sharing their personal experiences. Opinions may vary.

📖 Building Instructions 2

BI 3105, 40, 40905 V29

Download PDF

BI 3105, 40, 40905 V39

Download PDF

Inventory Statistics

Unique Parts

174

Total Pieces

Minifigures

Inventory Version: 1

Celebrate with LEGO!
Birthday Cupcake Fun

Birthday Cupcake

📝 Our Take

Ask BlockTalk about this set

🧱 Building Experience

📈 Investment Analysis

📖 About This Set

⚖ Compare Similar Sets

📦 Full Parts Inventory - 42 unique parts • 174 total pieces

🛒 Where to Buy

💎 Notable Parts

💡 MOC Potential

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