OK, here it goes:
PSP
Xbox modded with all NES, Super NES, N64, Sega, and Capcom games on harddrive, and about 40 Xbox games on hardrive with about 20 more not
Playstation
Nokia N770 Internet Tablet w/ bluetooth GPS
Aiptek HD Camcorder w/ 6MP still shots
Sony Cybershot 6MP Digital Camera
SAMSUNG Cell Phone
Fire Helmet Camera w/buddylight
Kenwood In dash DVD w/ GPS, Music Keg (60GB), 10-disc CD Changer, SIRIUS, Center Channel Speaker, Back-up Camera.
In car bluetooth
Nokia, Samsung, Motorola bluetooth headsets
Bluetooth OBDII
Logitech wireless keyboard and mouse
Sony Card reader
Minolta 3.2 mp digital camera (in bunker pants)
and probably more, but this is just off the top of my head. I use most of these often except the playstation and Nokia headset. Playstation used to to be connected in my 4runner for passenger entertainment, but now I think I will install the xbox for rear passengers to use on new lcd screen.