The nintendo Powerpad is a great accessory for your NES system. You should be able to purchase one for $5 or less! Shipping should be anywhere from $10 to $15. If you are going to spend more than this, you should wait and find one cheaper.

Using the Powerpad is simple. It should be plugged into the second control slot and each game made for the Powerpad, will tell you which side of it to use! Then run or dance or whatever.

 My kids love this, and I will let them get worn out using it on rainy days!