The first time i saw it at akihabara.com, i think this was a joke but i was wrong. This USB Fan is a real fan and can give you a little air in natural motion for your convenience. You can use it while the room getting hotter.
Just plug the fans that is brought to you by ELECOM to your laptop or PC and voila, no hot anymore.
Unluckily, there is no information about the pricing and the availability.