Spit Balls

Everything’s going high-tech these days, even the humble spit ball. No longer are tiny paper projectiles the cutting edge of schoolyard pranks. These Spit Balls ($5) are made of a sophisticated polymer that reacts with water, or spit, to grow to 200x the original size. Delightfully slimy, just as a good spit ball should be, these gooey globs are fun to bounce and play with, but watch out when you throw them, they explode on impact!