Yes, when the candles have burned up and there is no more candle to enjoy, then wash out the glass container and fill it with whatever you like. These are just regular glass jars and containers that can hold anything they are capable of for their size. The smaller ones are great for wrapped candies, paperclips, buttons, sewing thread, rubber bands, and even coins. The larger ones can hold any number of things that you want to keep with a lid on them. Even some of the boxes that these candles come in are nice to keep for reusing for other items. It is always a great idea to recycle what you can to cut down on wasted materials.