File this one in the "not-very-useful-but-we-love-it-anyway" bin: temporary tattoos that turn your hands into animals or monsters (depending on your preference). Spanish designer Hector Serrano created these sets of either animals (cow, alligator, tiger, bee, shark!, zebra, giraffe, parrot) or monsters (er, no nomenclature for these guys). Each come as a set of eight for $8.
Buy them both, and you can have your left hand/cow talking to your right hand/scary blue dude. It's like a one-(wo)man puppet show.