I call it Oogoo II. It is a DIY conductive silicone rubber that can be used to create a transparent stylus for iPod, iPhone, iPad, and other capacitive screen smart phones. Because the contact part of the stylus is transparent, you can see your lines and draw more precisely than with a regular stylus.
This instructable shows how to make conductive rubber and use it to create three types of stylus:
1 Hack any pen or pencil and turn it into a standard type stylus for pressing keys or drawing sketches while still allowing it to write on paper.
2 Use conductive rubber as a flexible glue to make a transparent flexible round tip stylus for precision use in drawing and key pressing.
3 Use conductive rubber to make a flat transparent paint brush tip stylus for use in drawing and paint programs. It fits in a wallet
The intro pic shows the paint brush style drawing a line on an iPod.
Step 1: Materials
The thumb pic shows most of the main materials used
Paraffin or candle wax
Naphtha solvent from hardware store
Silicone Caulk from hardware store
Corn starch from grocery store
Carbon Graphite powder- Available in larger quantities from: http://www.elementalscientific.net/
Available in smaller quantities at your local hardware store. It's called lubricating graphite and comes in small tubes or bottles.
VeilSheild conductive fabric from: http://www.lessemf.com/fabric.html
Also shown is a nickel plated fabric that is no longer available.
Pen or Pencil
Small diameter brass or metal tubing or rod from: http://www.micromark.com/