Here is an easy DIY for these Waldorf inspired toys.
You can buy these unfinished wooden shapes at Hobby Lobby or other similar craft shops. They are pretty cheap. I am all crunchy and used natural beeswax crayons to color them, but technically you could use any child safe coloring (paint, crayons, markers, etc...).
The idea is that children learn about sorting, colors, and coordination by putting the right colors together.
For the five minutes it took to take pictures, I was constantly fending Daniel off from stealing them. The kids love them!