The $16 Sinch is a simple accessory that'll attach your ear buds to a phone or portable music player.
It's a thin, rectangular piece of elastic with a small hole and a couple of magnets. And it's very easy to use. Just slip the plug end of the ear buds through the hole, plug the buds into the audio jack and let the elastic dangle down the backside of the device.
When you're done listening to your favorite tunes, wrap the cord of the ear buds around your device and the elastic band. Fold the elastic band around the ear buds and if you did it correctly, the two magnets will line up and keep everything securely closed until you are ready to rock and roll again. [Sinch via FastCo Design]