I suppose you have already thought of all these things, but, since you asked, here are some suggestions on how to bake bread without an oven.
Use a griddle! For most of human history bread has been made on griddles, hot stones, or in the ashes of fires; so there are really a lot of traditional breads to choose from. Start with the old American standby, the English Muffin! But then you can make Tortillas, Chapatis, Naan, Pita, the list is really endless.
If you have a fireplace, you can brush away the coals from an area where the fire has been, put down your bread dough and invert a dutch oven over the top, or even a flower pot. Then, cover the pot with some coals from the fire (you can do this with campfires, too). This technique takes some practice to get the temperature right; but Europeans used it, not only to bake bread but even cakes.
There are a million kinds of pancake. And don’t forget fried bread! Make a thin disk of bread dough and drop it into hot fat, just like a donut. It’s delicious!
But you can also make bread in a toaster oven. The only problem is that you can’t make a lot at one time and you can’t tackle recipes that ask you to bake in a Dutch oven at 475°. But you can make some pretty good bread, nevertheless.
Then there are are bread machines. These mix, knead, and bake the bread all in one machine. Sometimes you can get second-hand ones on Craigslist pretty cheap. It’s probably not exactly what you want, but it would at least allow you to make your own bread out of good ingredients. You can get some good results. (And, actually, I think bread machines do a much better job at kneading dough than KitchenAid mixers do.) If you are not living in the USA, this isn’t such a practical suggestion.
I have friends in Africa who have made bread using a homemade reflector oven. It consisted of a box that was lined with shiny aluminum foil. The heat from the sun was enough to bake bread, cook meat, etc. I think you can find plans online to make one (search for “solar oven”).
Finally, if you have any available space on which you can build, a homemade, wood fired bread oven is not expensive. All it takes is earth and some labor and you can make one. There’s a book called Build Your Own Earth Oven, by Kiko Denzer and Hannah Field. I haven’t done this, but if I ever live in a place where they’ll let me, I’m doing it!)