Can you use your slow cooker to make candles? Yes, you sure can! Not only is it a fun project, but it's a great way to repurpose wax chips from old candles that have burned down. Simply grate or shred the wax into the slow cooker, and heat on low. Then, prep your molds (old coffee cans or plastic containers work well) by oiling them with a bit of cooking spray. Tie a fresh wick (available at craft stores) onto a pencil, suspend the pencil across the top of the mold, and tape the bottom of the wick in the center of the mold. Once the wax has melted, pour it into the mold, and let it cool. Once the wax has hardened, trim the wick and light it up.