OK, OK, not a revolutionary break-through, but it can't be beat and I never leave home without one. Few things are more worthless than an empty lighter!(MAKE SURE THEY ARE FULL) All lighters now have an idiot proof safety mechanism that requires adults to seek the assistance of a child to operate!... IF THE LIGHTER GETS WET ITS NO GOOD FOR HOURS.
2. Flint and Magnesium:
This is a product that has been on the market for a few years now and is an item that I always carry! Its a 3" x 3/4" x 3/8" block of magnesium that has a flint rod molded into the side of the block. It also has a hole in it and comes set up as a key-chain. I keep a police whistle attached to mine in an outside pocket where its ready-to-hand. To use, shave magnesium from one side (of course I don't need to tell you to carry a knife) and collect the shavings. Then with the back of the knife blade, "shave" the flint so that the sparks ignite the magnesium shavings. Have your kindling handy! This heat is intense! But it doesn't last long, so you've got to get right on it with that kindling. It helps if you pile the shavings on something flammable(NOT IN YOUR LAP).
The basics
There are three requirements for fire: fuel, oxygen and heat. Remove any one of them, or provide it in inadequate quantities, and the fire dies. This balance is most critical when the fire is just starting; the heat generated by your initial fire is small, so your fuel needs to be small and the airflow to it must be good.