Any heat resistant containers can be used to burn candles.  It is good to look for containers which have thick walls and bases.  Examples are glass, ceramic, cement, coconut shell, etc.  We recommend using a container that has a diameter of not less than 9cm and a height of 10cm.  This is to ensure that no melted wax reaches the edges of the container leaving you with a wax-free container.Opt for heat resistant materials like tempered glass, canning jars, oven-safe ceramics, cast iron, and tins.Avoid flammable containers, such as raw wood or plasticChoose cylindrical or slightly tapered shapes to facilitate proper wicking.