Making a Stylus for iPad

How to make an ultra-simple iPad stylus. The materials are a metal pipe, a screw, and conductive sponge.

Wrap the screw with the conductive sponge.

Insert it into the pipe. Done. The pipe should be around 7mm, but you can adjust it to your preference. I used an aluminum one. After this, shaping the sponge with scissors improves usability.