For short-term use, I’ve got a single burner Coleman Stove that snaps right onto a a small Coleman butane tank.. I got both in Walmart sporting goods - if memory serves, it was less than $10 for the burner, and around $2.50 each for the tanks (which, when I tested it, lasted for about a week of normal cooking...)
Other options that I have for longer-term use is a 2-grate cast iron hibachi (you can burn wood chips or small wood pieces, after you run out of charcoal), and, since I live in the country, I can build a cook-shack around/over a wood fire-pit...
The trick is to get out of the “what can I buy” mindset and train yourself to look at the resources you have around you with an eye towards improvising, in extremis.... ;)
Uncle Ike, I bought a fixture at Harbor Freight that allows refilling the small Coleman propane tanks from a 20 pounder for about $1.00 each refill. I ‘capture’ all the empty small ones I see now.
Check garage sales. Some people who are relocating a long distance sell full or almost full 20 lb propane tanks for ridiculous prices. My neighbor purchases them when he finds them for under $1.00. He now has 8 almost full tanks in his storage shed. Several he purchased at garage sales for 25 cents each! He shared this information with me today. Saturday I go hunting!