I recently attended an entry-level wilderness search and rescue course taught by some State Forest Rangers. At one point in the class the discussion turned to gear and equipment and a Ranger spoke about starting fires. He mentioned a fire starting device I had never heard of before (which isn’t unusual, I’m no expert in the stuff), cotton balls impregnated with petroleum jelly. Here is a video:
Pretty impressive. The cotton, once prepared is even semi-waterproof and will light and burn after a soaking.
The Ranger suggested taking some large-bore drinking straws cut to size, melting one end closed over a flame, stuffing the cotton into it and then sealing the other end (be careful not to ignite the cotton). This gives you a longer term,individual use, waterproof storage container that keeps the cotton from drying out. When you need to use it you slice the straw open, fluff up the ball and light it.