My skepticism meter is running a bit hot on this one, but considering the heat wave I’ve recently been stuck in, I’ll try just about anything to stay cool. The Handycooler Personal Air Conditioner promises to keep you cool any where you go. The little battery powered device works by drawing fan powered air over a damp sponge, which is said to cool it down (not you) by as much as 25 degrees. The result is damp and cool air fired where ever you point the handheld sized device. Battery life, which comes by way of 4 AA batteries, is good for up to 5 hours or you can just plug it into any powered USB port.