NoPoPo Liquid-Powered Battery is Gross
The Nopopo(that's "Non-Pollution Power", baby!) liquid-powered battery is claimed to be able to run on any liquid. You basically insert any type of liquid into the "teat pipette"(HAHA, TEAT PIPETTE!) and the battery can run up to an incredible 20 hours. Apparently, at the product demo, the promoters showed it being tested with apple juice, beer and water. They even claim that it CAN be powered via saliva and urine.
Yes, I've always believed that the earth's energy problems can be solved if people would just learn to better utilize their urine. Which reminds me of the device I created a while back, but failed to get any patents or investors for it. It was a turd-powered water-saving toilet. You basically poop in it and flush it down with the poop left-over from the previous user. Except for the smell and high infection and death rate, it was a real winner, like the sweat-powered vibrator I also invented. But that's a story for another post.