A really great (Madcatz) third party perripheral for the GBA: no more crammped hands
I just got this thingamabob for my GBA that basicly is a blob of plastic that snaps on and makes the whole thing just plain bigger. Oh, It's also a rechargable battery but I could care less about that part. The thing is, now my GBA is actually adult human sized! I can't say enough about how much better it feels. I can actually play games for more than 10 minutes now. Especially F-Zero. This is the perfect solution for me untill I actually get around to finishing that joystick :p. They're $8. If your hand cramps up like mine did (really painful) on a standard GBA, you should really get one. It's called the Madcatz battery grip or something like that.