Piss-controlled urinal-based video games
Cory Doctorow: Marcel Neundörfer's On Target urinal has a pressure-sensitive screen recessed into it -- score points by shooting the moving images onscreen. Not only does this add much-needed entertainment to otherwise dreary elimination functions, but it also improves aim -- if you stay on target, you'll avoid splashback and misses. Link (Thanks, Vipula!)