Headphone Splitter from Logitech

You can get lots of different models of splitters to allow two people to share a headphone jack, but Logitech has made one specifically for the PSP.

The Playgear Share is different from other splitters since it is designed to fit the PSP. It is a rigid cable which, when plugged in, presents a pair of stereo headphone jacks directly to the front of the unit.

Nothing Earth-shattering here, but a clever device, nonetheless. Get one for just $9.99 at Amazon.