Wii Remote + Nunchuk set: $16.50 at Amazon
Though not the official Nintendo-made controllers, this Wii Remote and Nunchuk look an awful lot like the real thing and carry a far lower price tag. Note that the Wii Remote doesn’t contain the newer MotionPlus controller so you’ll have to get your hands on the optional add-on.
Velocity Micro 7-inch Android tablet: $170 at Best Buy
If you’re willing to get your hands a little dirty, the 7-inch Cruz tablet features a nice capacitive touchscreen running atop Android. You’ll have to do without official Google apps or access to the Android Market, but if you’ve got the chops to side-load applications, the $170 price tag is pretty nice.