However you can just as easily make your flatbread in a cast iron skillet (again over hot coals) or on a wood stove or electric stove.
The second and third videos are from "Coalcracker Bushcraft" and show how to make biscuits and camp bread, also over a fire but using a Dutch Oven instead.
A Dutch Oven is a handy off grid device because they are meant to be used with hot coals on top of the lid and help heat whatever is inside more evenly.
How to make Biscuits in a Dutch Oven over a Fire
How to make Camp Bread in a Dutch Oven over a Fire