One option is to simply reuse the candle by remelting the wax and pouring it into a new container. You can also repurpose the wax by using it as a sealant or lubricant or incorporating it into DIY projects such as homemade lotion bars or bath bombs. Another idea is to mix the wax with crayons to make homemade colored wax sticks for art projects. You can also donate or sell your leftover wax to a local candle-making business. No matter what you choose to do with it, don't let that unused wax go to waste!