I don't want to light a bulb with the battery as almost everyone is doing that.So please help me an suggest any good things and tell me how to make it.I have the idea of making a small plastic fan spin but i don'nt know how to do it.
Go to radio shack. they usually have a lot of little inexpensive kits like that to build.
If you have a small plastic fan with some wires that come from the motor then you're set. You just put one wire on the positve end of the battery and one end on the negative. Voila, electrical current.