We're going to get cheap bags from a dollar store and use a laser to cut the paterns. We'll do two patterns, one that consists of simple geometric shapes and one that uses graphics from the internet.
I made this at Techshop. http://www.techshop.ws I used their Epilog laser cutter/etcher.
Step 1: Materials And Tools
* Laser cutter (I used a 45 watt Epilog Helix laser cutter). I assume in this instructable you know how to use a laser cutter.
* Piece of scrap cardboard