Headphone Gears (2011)
Tangled earbud cords suck. However, wrapping up earbuds can also be a real pain if they have that little mid-wire remote. These gears fix that problem. Since you can pick whatever gear you want to go to next as you wrap you can always choose the appropriate distance to get the remote to fit properly.
Branden created this project out of raw GCode, the native language of most CNC mills. The program itself is highly parameterized so he can, for example, easily create gears of any size or with any number of teeth.