Modular Snap-fit Blocks

I have a two-year old daughter who loves playing with blocks and other construction toys. However, all of the block sets we've gotten her have either been too small for her to manipulate, require too much force to put together/take apart, and/or don't come in sufficient diversity of shapes.

I've been teaching my daughter about 3d Printing (she loves being able to ask for a toy and watch it print), so I decided to see if we could design a better snap-fit block for toddlers. I'll do the design