Sure we've seen glorified dehumidifiers like this before , but we're a sucker for any aquatic wonder which claims to solve the world's drinking water shortage. The exterior wall-mounted Watermill from Element Four is the latest "water from thin air" contraption and produces up to 3.2 gallons of water a day, pumped through a trusty ultraviolet sterilizer. But more importantly, it offers to hydrate your family of 6 (according to EF) for a mere thirty-five cents a day in power, not including whatever price Element Four decides to sell it for. Or you could just stick a bucket on your roof and be done with it -- we hear it rains occasionally.[Via Gadget Review