Play-Doh is one of those things I played with as a kid for hours. It was also my introduction to color mixing. I remember my mother teaching me how to make different shades by kneading the dough (or is it Doh?) together. She even made us some homemade Play-Doh a few times which was better than the store bought if you wanted it to try out for a sculpture or something.
I don’t know what recipe my mother used but Instructables has one that looks good.
via Kottke