I'm amazed that no one has mention those glass "clacker" balls on strings that you could play with until they shattered into a million bits and lodged in your eyes. Or the Amazing Stretch Armstrong (TM) with mysterious radioactive red goo... man he was fantastic. My husband actually managed to stretch him through an entire house, around corners and everything, hoping to create a giant Armstrong backlash, but he just kinda oooozed back into place when let go. Bummer...