Condom Slingshot!
I don't know what the #100Ways tag is for, because I'm tweety-illiterate, but whatever it is, this guy is the best at it. Joerg Sprave is a bad Scrabble hand, but a good slingshot maker, and he's taken a whole boxfull of condoms and turned them into weapons of destruction. Best line, said in a deep former Soviet bloc accent: "The winner: the condoms!"