The guys who sell flatbread on the street here cook it on reused refrigerator condensers on top of a bed of charcoal, which can be on the ground between rocks, or more commonly, in a metal pan atop a (presumably stolen) shopping cart. This is better than a hot plate if you can reliably find nontoxic wood.
I use a Lodge double dutch oven that is cast iron. It is a combination where the lid is a skillet and the bottom is a 5-quart pot. You can cook everything imaginable in this combination. It is far superior than the nonstick pans that are toxic at high temperature.
Cast-iron cookware is very expensive here, and therefore scarce. If you're cooking in a shopping cart it's unusual for cast iron to be a viable alternative.