Watch this video on how to make magazine coasters.
It hurts to throw away my old magazines, even though I'll never read them again, and my scratched CDs are (almost) completely useless, so I made coasters, saved money, and upcycled.
You don't have to use CDs--you can substitute them with cardstock or something durable, as long as you have a base to work with. You can make them in different shapes, also--go insane.
And be ready to get your hands covered in glue.
Music: "Title and Registration" by Death Cab for Cutie