Engadget reports on a clock that keeps the fly population under control and is also just plain cool:

This prototype time-piece from UK-based designers James Auger and Jimmy Loizeau traps insects on flypaper stretched across its roller system before depositing them into a vat of bacteria. The ensuing chemical reaction, or “digestion,” is transformed into power that keeps the rollers rollin’ and the LCD clock ablaze. The pair offers an alternative design fueled by mice, another contraption whose robotic arm plucks insect-fuel from spider webs with the help of a video camera, and a lamp powered by insects lured to their deaths with ultraviolet LEDs.