Give your credit card a custom image

You will need:
* 3M spray mount. ($3.00 at Michaels. Use spray mount, not poster mount.)
* Credit card. (Free and plentiful.)
* Knitting needles. (Free if you steal them from your grandma. You can also use something pointy yet soft.)
* X-Acto knife. ($10.00)
* Premium T-shirt transfer paper. ($10 at Michaels. Don't waste your time with the crap they sell at Staples -- go for the high-end stuff.)
* Iron.
* Adobe Photocrap or similar image-editing software.
* Color inkjet printer. (Laser printers will melt the paper.)

Detailed instructions here. (Warning some of the sample cards feature nudity.)