No firewood where you live? No problem. The paper jack is designed to be used with very commonly available items. See pics. Just through testing this device, we put several recycle containers out of business for the year. It will fit over the common 5 gallon bucket. You can make briquettes without wax or pine sap and they work fine. Our briquettes leave a hole in the middle that you can fill with anything from wax, pine sap, to old cooking grease. Briquettes burn long steady and with very little smoke. Great for urban environments.