When you’re tearing downhill on your snowboard, it’s a little distracting to take off your glove and dig out your iPod just to, say, hit pause. Instead, build this simple radio-frequency ID system and control your iPod by waving your hand in front of your coat.
A tag sewn into your glove sends instructions to a reader stashed in your pocket.

Unwire Your iPod

Cost: $161
Time: 6
Hours
Easy | | | | |
Hard