Cool yourself off with some eye candy from Antec. The FanPal is a USB-powered fan with disco lighting effects. It's lit up with red, green and blue LEDs, and it moves 35.1 cubic feet per minute of air right where you want it.
Add this trinket to your list of stupid USB tricks. Sure, it's just a little case fan adapted for your desktop, but it might add a bit of color and cool to those sultry summer sessions, slaving away all day over a hot workstation.