You might remember making Shrinky Dinks as a kid. They seem kind of magical ... it with a permanent marker before shrinking it in the oven. 1. We cut pieces from plastic containers and punched ...

colored and then shrunk and hardened when heated in the oven. Both Slinky and Shrinky Dinks are recognized by TIME Magazine as two of the Top-All Time 100 Greatest Toys.

Safety glasses suggested Caution: hot materials! Thoroughly wash hands after this activity Work with an adult. This activity involves heating polystyrene plastic in a HOT regular oven or toaster oven.