Flint and steel can be used to start a fire.
Level of difficulty (1 being easiest, 10 being hardest): 5
Matches can get wet, and the last thing that you want is to be caught in the wilderness without any means of making a fire. It's important to know that all you need to spark a fire is flint, steel, and some kindling. The spark from the flint and steel will light the kindling and soon enough, you'll have a warming blaze.