I know this is kind of a dumb and easy instructable, but it's kind of fun, and it was a cheap way for me to decorate my apartment.
Step 1: Materials
An old CD
I've found that you can get really cheap candles at dollar stores and grocery outlets.
Step 2: Let's Make It!
2. Set it for 5 seconds and press start.
3. Watch the cool light show and be easily amused.
4. Take the CD out and put a candle on top of it
That's it! Enjoy!
Disclaimer: Microwaving CD's is probably not good for your health or your microwave. Everyone does it anyway though. I'm not responsible for anything bad that happens.
Also, hot wax could probably melt a CD. Never leave a burning candle unattended.