This neat little cube not only cools you on a hot summer day, it will stream you warm breezes when the weather turns cold. The desk fan also looks really nice and is built with ambient LED lights.
Instructables user HHarry shows off how to make your own version. Among the materials you'll need are a wooden board, a 12-volt computer fan, LED strip, and copper rods and electric wires for the heating element.
Besides drilling, sawing and gluing, you don't really need special skills to make your desk accessory -- although it helps if you're really good at drilling so you get this beautiful finished look.
Desk Fan/Heater [Instructables]