Here's what I know. The iPad is tested and seems to be working just fine.
The psp was plugged in and working but I didn't have a game to test it. Note that it may not work? Also note that it doesn't come with the charger or battery (will need those to test future ones) It is missing the battery cover and the lil joy stick knob, but that still moves around.
The ds lites are a little rough looking. I didn't test them. They don't have batteries. The coral green one is definitely shot from the looks of it, but maybe internally there's something? Looks like it went to war. The white one looks decent but also no battery to test it. The Fit bit is untested. The headsets look pretty new. But not tested.