I've been playing around with a game recently called 'Draw Something.' It's basically an app version of the classic "Pictionary" where users draw pictures based on a preset word and try to get another player to guess what it is they are drawing.
Now, the unfortunate thing about this game, is you have to use your finger... Which makes the more difficult words even harder to portray because you do not have that fine precision that you would have with a pen. Fortunately, I stumbled upon a tutorial on Youtube on how to make a stylus for the newer smart phones (aka: iPhone, Android, Windows Phone, etc). Your regular pressure based styluses won't work here as they are non-conducive.
Fortunately it's quite simple to make a conducive pen-stylus. And the only materials you need are as follows:
Foil Template (Located
HERE)
Foil bag (most kinds of chips use them)
Pen
Scissors
Razor/box cutter (for small precision cuts in the foil)
Tape
The actual tutorial is located
HERE
He's a little difficult to understand because of his accent, but the design works well. Also, I plan to make my own video tutorial (hopefully in the near future) to help make it a bit easier for those of you having a tough time understanding everything he says/does.
Good luck and have fun!