One I doubt anyone else will think of, supported by real life experience.

Carbide lamp.

Dump some carbide in the bottle, add a little water, poke a hole in the cap, screw it down, hold a lit match near the cap hole till the acetylene catches.

Caveat: do not add too much carbide and water at one time. If the acetylene production is too high, the bottle will pressurize and the lamp will become a flamethrower, or could detonate.