In high school, I would take my kneaded erasers and mold them into my worm characters during class. I could usually get three or four out of a standard-sized wad of eraser.

Of course, I'd eventually need to use the eraser, so they'd all end up grossly disfigured by the end of class. I'm sure I got some weird looks from the other students, but I didn't care.

Official site: http://www.peterandcompany.com