If you have a 3ds/2ds just install home brew launcher and plop all the ROMs you want on the SD card. I have every NES,SNES, gba, Genesis game. You don't need to hack it either.
cyris69I've done this with a PSPgo. Super portable and works really well. The SNES emulation works near-flawlessly on the PSPgo as opposed to earlier PSPs.