Who knew you could use urine to power a battery? The Pee Battery uses the ions in human urine to keep 1.5 volts streaming for 90 minutes, and its makers say it can be tweaked to last even longer. They're even saying that all other bodily fluids work equally well. Sounds like an unpleasant way to get that iPod working again.
These are some batteries that would certainly pass our USB Piss Test. Rig 'em up to power gaming consoles, and we could have ourselves a Pee Wii.