In the old days, charcoal was used for all sorts of things, like metal smelting, water filtration, and even medicinal purposes. And, get this: charcoal was even used as a form of currency in some ancient cultures. Who knew that something so black and dirty could be so valuable?
But, back to the present: what do you do with charcoal after grilling? Well, one option is to reuse it, if it's still in good condition. Just make sure to clean it properly, and store it in a dry place. You can also use it to fertilize your plants, or even purify your water.