If you have extra CD's laying around with nothing to do with them, pop 'em in the microwave for 45 seconds (i think, somewhere around there). You should get a cool light show, but when you're done you get a cool crackle effect on the CD. Pretty cool if you make a wall hanging or a curtain out of them. Oh, it's harmless to your microwave too!
this is my first post, so be nice! I am in love with this site, it's friggen awesome!!!