Yeah yeah, the iPad is supposed to be all about the touching. But if you draw on it, or want to write a lot, a stylus is definitely a must-have. You could buy one, but why not make your own? Yeah, there were a couple in this round-up, but I like this one better. More mad science-y.
Essentially all you need to do is connect your conductive surface (i.e. your skin) to the screen via some sort of extension — in this case some copper wire and a bit of conductive foam. If you’re going to be gripping the stylus in one place, you might just put the wire there and drill a little hole for it to go through, if you don’t like the whole wraparound thing.