While you have many options when choosing a container to house your new candle, you need to make sure that it is heat-resistant! This means they won’t crack, leak, or catch on fire!  For example, one of my favourite uses for an old canning jar is to repurpose it as a candle.  You can use a variety of containers made of glass, cast-iron, and oven-safe ceramics. When in doubt, safety first! Check to make sure your container is heat-safe, first. You don’t want to learn the hard way.