I found this really cute and interesting video which shows an old fashion way of curling your hair. Back in the day when we didn't have hair dryers or curling irons, the women curled their hair using rags and rollers. This method is not only healthy for your hair because you're not using heat, but you're using less energy and using reusable materials to curl your hair. Don't throw your rags away, you can keep them. Wash and dry and reuse them!