Attempted to find some simple baby puzzles on multiple sites, and each one fell short just a little bit, so I've decided to start making a few of my own with improvements.
My first puzzle features 3 simple shapes, and tapered insert holes to match on the base.
Equilateral triangle makes this piece easier for baby.
Each piece is designed to be large enough to safely play with, with no choking hazard.
Added a 3mf file so you can play with it in fusion 360
Color coding the pieces makes it a color learning puzzle also!
The author marked this model as their own original creation.