I purchased some more of the nanostriker's to make a back up fire starting systems. I put one along with some cotton balls in a plastic pop bottle blank ( they look like test tubes ) and attached the cap to the bottle blank. One is in the glove compartment of my Jeep and one in each backpack for emergency use. Since the blanks are weather proof and clear , it is easy to see what is in them and the strikers will ignite the cotton balls.
This review was written in the old system and had content requirements that are different than reviews written today.