[youtube]http://www.youtube.com/watch?v=aN1xvPL_Irw[/youtube]
The screen on the iPad/iPhone/iPod Touch is the best capacitive touchscreen in the world so no one finds it necessary to use a stylus to interact with the phone in any way, however there are some people who could use a stylus and an app to drawing to create animations like the ones you can see at the beginning of the video above.
For those people, there are styluses, but they are quite expensive, so above you have a small video tutorial that will teach you how to make your own stylus using a pencil and a little imagination, good luck.
