There are many Instructables on how to make an Stylus. Well, I'd like to add to the pool and publish one myself. I saw how to do this from a video
by Collin Cunningham from Makezine. It is his idea, not mine. I figured that it should be made into an Instructable. Enjoy!
Step 2: Stuff
This is pretty simple. All you need is:
-Conductive Foam. This is the most important piece! ( if you buy a kit from the makershed, adafruit, etc that comes with a micro-controller, the foam is the stuff that protects the chip pins.)
-(Opt) Wire Strippers
Step 3: Pen Prep
The main body of the stylus is a pen. Disassemble the pen completely. Throw away everything except the tube. My back end did not come off so I had to take scissors to it.
Step 4: Conductive Foam
Now that you have your pen ready, take your conductive foam and grab an object with a touch screen. Hold one end of the foam and try using it on the touch-screen. If it's conductive it'll work like your finger. If it works, cut a piece of foam slightly thicker than your pen tube.
Step 5: Prepare the Wire
This step is pretty easy. Strip the insulation off of the last 2" of the wire.
Step 6: Foam + Wire
Now that all your pieces are ready to go, it's time to assemble:
Thread the un-insulated wire though the top of the conductive foam. After that, tightly wrap the wire around the top of the foam.
Step 7: Into The Pen
Now take the foam-wire and thread it through the front of the pen tube. Pull the foam through as well but leave about a quarter inch on the outside.
Step 8: Wire...Again
After all that, it's time to strip all the rest of the wire that comes out the back-end of the tube. What you do now is secure the wire with a small strip of tape.
Step 9: Wire Wrap
Now what you do is wrap the un-insulated wire around the tube. Next, tape the wire down near the front of the pen to secure it.