I always carry 3 Bic lighters. NOT the cheap kind. It seems like overkill, but I did have the wheel fall off the one time I only carried one lighter.

If I REALLY needed heat, I'd get in my sleeping bag in the tent. Second choice in wet weather would be to light my SVEA 123 stove which puts off a lot of heat you can get close to.

For a fire, I get squall wood for tinder. That's the tiny dead branches on pine trees.

If that's too wet, I carry lighter fluid with me to prime the stove. (Never put lighter fluid on a fire where a first attempt was made. Soak a flower or clump of grass and then put it on.) If lighter fluid doesn't work, I always have my bottle of gasoline. (I don't recommend liquids for scouts.)

You can also get a tube of fire paste. I find it works best if I put it on a rock or something below the tinder. Otherwise, it tends to melt and run to the ground doing nothing.

If none of these work, I'll go back in the house.