Headphone splitters are tiny cables that let you plug to headphones into a single headphone jack and so share your MP3 player's output with a fellow traveler. They're also quite cheap and take up no room at all.
If you're at all like me, you're taking all your music with you stored on your iPod or other MP3 player. The only real downside of this, except the need to recharge the battery, is that listening to an iPod is a very solitary exercise. It's more fun to share.
This simple little gadget simply splits the headphone jack into two, so that your travel partner can plug in his or her headphones as well and dig on your tunes too.
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