Some thoughts;
Fire= heat, signaling, protection, boiling water, cooking, sterilizing.
Ways= lighters(all kinds), matches (all kinds), metal matches(flint and steel w/magnesium), piece of flint/steel (stone), lens (glasses, bottles, ice), fire bow/board (shoe string for bow), fire board (manual rubbing), battery/steel wool, worn out "Bic"(for spark)tinder (steel wool),fire "piston" (compressed air, possible but expensive), gun (remove bullet/powder, fire primer into tender/powder, alum can/chocolate (parabolic mirror).
Scenario= Plane crash/ what would you logically carry with you?
Plane crash/commercial=Not allowed=lighter/matches, gun, knife.
Not sure= flint and steel, parabolic mirror (real one), metal match, fire piston, steel wool.
Leaves you with= glasses, bottles, lens, alum can/chocolate, shoe string, battery w/ any metal to short out, and any fire from the crash sight.
Private plane= any or all of the above (at least you SHOULD carry), BOB bag, flare gun, radio, signal mirror.
How many of these ways have you actually made fire?
Personally accomplished:
Matches, lighters (many kinds), metal matches, flint and steel, (found flint/knife blade), lens/parabolic mirror, muzzle loader/primer/oiled cloth/ powder, battery and steel wool.
Personally tried (and will continue to try):
Bow/board, alum can/polished with what ever, ice lens, "Bic" steel wool, pistol/primer, cloth/powder, fire piston (made one but can't get it to work).