21-year-old UK resident Owen Louis has devised a way to charge his iPod using an onion! First, Louis makes two holes in the onion, then he soaks it in energy drink. Using a standard USB cable, he connects his iPod to the onion.
According to CleanTechnica, Louis' method is a hoax:
However, according to the Guardian (25 November), it appears that the basic science behind the idea is correct, but that this particular technique is a hoax. The article quotes Jon Edwards of the UK Royal Society of Chemistry (no less), who says "The science behind the idea isn't bad - you can generate an electric current from vegetables - but the video is a hoax." He explains that it can't work because you need two electrodes to provide a reaction and a reason for an electric current to flow.