I like to recycle my candles when they get low. I use my candle warmer (thats what I call it at least, its in the pic!) to melt whats left of each candle and pour them into the same jar/glass/candle etc. Just make sure to wait for each layer to harden before pouring in the next. Also to put the wick in when you are pouring the first layer!
Shasta posted this project as a creation without steps
Here are some similar tutorials to help you make this one!