I usually take a white lighter, and I scratch in it with my pocketknife, and then I write in the scratches with sharpie and wipe it off real quick, making some cool ass designs. My favorite is called "dank", it's a green lighter with a pot leaf scratched in on one side, and a spliff on the other. I've had it for like, 2 years. It rocks. I pull it out at parties.