The 250 vinyl geometric shapes are at toy that is just as brilliant 50+ years later. This classic box is a replica of the original 1951 set. A wonderful way for kids to learn about the shapes that make up our world Colorforms are also great travel toys since they'll stick on windows just as well as the pages provided in this kit.

This was like really thin glossy stickers that you could place against a background. (via amazon.com)