Get a jar that closes with a rubber seal. Put in corks from wine bottles, etc, then fill the rest of the way with denatured alcohol. Be careful not to put in too many corks, since they expand as they absorb the alcohol.
Turn the jar upside-down. The corks on the top will now be on the bottom and totally immersed in the alcohol.
When you want to start a fire in your fire pit, turn the jar right side-up, take a cork that is now on the top - you'll only need one - and use it to start the fire. You'll need to be careful not to set the jar close to the fire, since the alcohol, like all lighter fluids, is extremely flammable.
A container of denatured alcohol lasts forever. The corks are basically free, and you'll be stunned at how great these work.