Building a library of the most common train MOC parts?

I was wondering if the more prolific MOC designers and also train enthusiasts who build their own models have some kind of parts library with parts to experiment with in a more haptic setting than just digital? For instance a selection of SNOT bricks in black and red (if you are into steam locomotives) and plates of the most common colours? Is this a fool's errand because there are just too many bricks to choose from? submitted by /u/DaggerAndBrush [link] [comments]