Want to launch a spit ball at an annoying coworker, but worried about the sanitary issues of slobber, especially during the cold and flu season? No problem, just shoot 'em with one of these cool new DuneCraft Spit Balls. These 21st century spit balls skip the spit and are made from non-toxic, hygienic polymers that grow up to 200 times their size. These slippery, slimy mini balls slide, bounce and explode against their target. It's the perfect disgusting fusion of chemistry and fun! (via Michael Kiely)