While cleaning out my office i came across about three of them. The previous day we watched Ripley's Believe It or Not where this guy could throw cards 216 feet. This gave us the idea how far we could throw CDs down our street. After throwing these CDs about 100 metres down the street we decided to throw them directly at a brick wall. The result is that the CDs shatter. Pretty cool considering they dont snap when u bend them in half.
another thing we used to do was place them in the microwave oven shiny side up for 15 secs. Gets lots of pretty colours and funny smells!
I use it as a mini-paint palette. You can mix paints or even epoxy on it and the hole in the middle makes it easy to hold...and then after you're done just toss it in the garbage!