Remember to never leave candles unattended! We've burned ours for hours on end with no problems- actually we were hoping the plastic edges would curl more than they have, and we feel ours to be perfectly safe to use indoors but I keep an eye on it. You might prefer to use it outdoors because of burning a candle inside of plastic, but it could easily be made into a lamp if you wired a led into it or filled it with Christmas lights.
Also please remember to rate this instructable if you like it, and vote for it in the contest! Thanks!!!
Step 1: What you need
Sharpie pens of whatever colors you want your project to be
Glass tea light holder
Elmer's glue (or any other glue you want) (optional)