I grew up in a house that always smelled really good. My mom had (and still does have) candles everywhere! I have turned out the same way. A candle in the bathroom, the kitchen, the living room, etc. I tend to buy candles based on scent alone and not on brand name, but lately I’ve found myself looking at the glass jars they are in as well. This is the easiest life hack/craft you will ever do, and yet it is SO useful!
Once your candle has lived its long and beautifully scented life and its final flame putters out (holy dramatic description, batman), take it to the kitchen, heat up some water in the microwave and pour it over the remaining wax in the candle.
It will start to bubble up and float to the top and as it cools, it will form a solid disc that floats on the surface of the water! Some times you have to repeat this melting process a few times to get all the wax out, but that little disc will just break in half and you can toss it away.
As soon as the candle jar is free of wax, pry the wick holder off of the bottom (a butter knife works well or a pair of normal scissors) and scrub out any soot before tossing it in the dishwasher.
I also carefully remove any stickers and labels for a clear jar (Goo-Gone helps here, too).
These jars have lids, they come in all shapes and sizes, and I use them for everything! I keep Q-tips and cotton balls in them on the shelves in the bathroom, I store doggie snacks in them, I store safety pins and screws and nails in them… They are perfect little storage containers! And you’ve already paid for them multiple times over by enjoying the yummy smells from the candles they used to hold!