The Real Solid Liquid has been the standard of excellent fun since 1950. It bounces like rubber, stretches like taffy yet breaks into pieces!
Silly Putty has been bringing its pleasure to both old and young for generations. Mold it into a ball and watch it bounce, see how far you can stretch it before it breaks. Press it on some newspaper and watch it pick up the print. If you use your imagination, then the sky's the limit!