Found these in the Wellingborough 99p store. Its a device that plugs into the bottom of the iPod and lets you remote control it with an infrared handheld remote.
They are branded Maxell (I've taken the stickers off).
Best of all, if you're into electronics then they have some useful bits inside. There appears to be a standard 3 lead IR receiver, the cases are not too bad - plenty of room for projects inside, a 2xAAA battery holder, 5 tactile buttons and an IR LED with driver circuitry. If you were to buy these bits seperately for a project it would cost you a lot more than 99p ........
Of course you could just plug it into your iPod if you want to ;-)