6" USB Desk Fan, $11 with code 8PDIR5M3 | 4" USB Desk Fan, $9 with code MRJZZ4QV

If they don’t keep your office cool enough in the summer, you can at least ease your own suffering a bit with a desk fan. These two models from SIMBR are small, adjustable, and most importantly, USB-powered. Just plug it into your computer, and enjoy the breeze.