I have a broken 2nd generation iPod nano (8gb). I was going to try to sell it on eBay and see if anyone needs it for parts, but decided to check here first. It's either a battery issue, or the battery connector. When i wiggle to cord, sometimes i get the screen to turn on.
Anyway, if anyone's interested, and if this can help rockbox development, i'll be more then happy to mail it to you. But please, only respond if you plan to contribute to the project, not because you want to get a free (and probably easily fixable) player.