Through the years, there's been plenty of gaming accessories. It's funny to look back and see things that were suppose to be groundbreaking at the time, but turned out to be pretty horrible. My favorite useless accessory is the R.O.B. robot from the NES. I thought it was the coolest thing ever, until I learned it actually made things harder. But I was a kid at the time, now I'm more wary of the latest and greatest "must have" gaming accessory. How many people shelled out money for the useless Wii remote sports add-ons like tennis rackets and bowling pins?
More more useless gaming accessories*cough* plowerglove *cough* can be found here