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It's a shame when a good candle burns out --- especially when there's plenty of wax left behind. Fortunately, you don't have to throw out the candle just because the wick is gone. The candle wax itself is completely reusable, and will burn just as well after being melted and re-formed. Making candles can be a fun and creative project for kids and grown-ups, and it's an environmentally friendly craft that helps you make more with less.
This is a great website... just have to do some searching. Great ideas collected from the web by Infarrantly Creative.
How to clean out candle jars for reuse: If you get the wax out before the water has completely cooled, do not pour the hot water down the drain. let the water cool overnight, and the next morning, the wax floated to the top and hardened.