I read the Tightwad Gazette from time to time when my frugal mind is not being creative. Lately, I was reading the part about candles, and tried the recommendation.
I took a bunch of candles that were on their wits end and melted the little bit inside and poured the little bits into a mason jar to cool in colored layers. It looks pretty awesome, plus, with a new wick added, I have a new long lasting candle.
FYI - if you buy candles at yard sales or the thrift stores, you can use the wick that's there in a new mason jar style candle for pennies on the dollar.
No more wasted candles, and from the looks of the new candles I made, I won't have to buy anymore anytime soon either.