Whew.. since building my PC (for gaming, of course), I've put most of them away in storage. Been awhile since they were dug out, let me see if I can remember them all, haha.
Handhelds:
DS Original
3DS XL
Gameboy (x3 -- my three older sisters all handed theirs down to me. Don't give a 10-year-old that kind of power.)
Gameboy Color (x2 -- had a yellow one and a teal one, for trading between Pokemon games of course. I had 3 Gameboys, I didn't need friends.)
Consoles:
Dreamcast
PS2
Gamecube
N64 (x2 -- my cousins borrowed mine, lost most of my games, broke two of my controllers, and gave me their console as an apology? There's a fair trade.)
Xbox 360 (x2 -- I have an Elite and a Slim. Broke the former, bought the latter. Broke the latter, fixed the former. Rinse, repeat.)
We also have an Intellivision, Atari 2600, 3 NESs, an SNES, and I think a Genesis maybe? kicking around.. but they're not mine, they're my parents'/family's.