Bic lighters are great.I had one I left on an uprooted stump dirt ball where I would burn brush,it stayed outside for about 8 or 9 months and was still good.
Dryer lint will not work unless you collect it from a totally non synthetic dryer load,cotton towels.
Better version is,a cotton ball and a finger dip worth of Vaseline.this will burn for around 40 to 80seconds.maybe longer.
Carry many treated cotton balls in old vitamin bottle.hook out what you need with a stick.
Ranger bands ,pieces of inner tube work.use old motorcycle tube for cover on your machete sheath.
Zippo lighters are ok but only seem to last about 10 days until fuel is evaporated.
I carry bic, ferro rod,cotton balls,military heat tabs,and yes my pack has road flares in it.
I'll stop now I'm usually not this long winded.sorry guys.hope this helps.