My daughter has been playing with these Brain Flakes at preschool and we got a set to play with at home, but the mix of colors and styles was very random. I designed these to interlock with the Brain Flakes we have and now we can print whatever color and styles she likes.

These are building toys that interlock to make structures. This set includes shapes, letters and numbers, so they can double as learning toys for the alphabet, numbers, simple math or other toddler games.

Easy to print. However, depending on the cost of your filament spools, it may actually be cheaper to buy a pre-made set in bulk. But if you want specific colors, styles or just a small set to start with, printing them is a great option.

Update: The M, N and W letters have a tendency to curl at their sharp points with some brands of ABS (high warp). Uploaded M2, N2 and W2 letters, which have a single layer runner to anchor these points, which can easily be removed with a hobby knife.