NES
SNES
N64
GC

PS1
PS2

Gameboy Color x2
Gameboy Advance SP x2

(the ones I still use in bold)

I also built my own pc. Despite using the best of the best in terms of parts that were still on the price/value curve (generally that means one notch lower than the absolute best available commercially), five years without upgrading has made it unusable for the new games starting to come out.