Some fire starter systems rely on char cloth. I wrote about the fire piston that I bought a while ago as one of some backup fire starter systems to have on hand. I like the fire piston, but it requires some type of tiny piece of tinder and char cloth

Lifestraw or some other water filters are great, and if you have one you should use it. But what if you don’t have one? I knew that you could make a water filter from some basic materials that you probably already have at hand like sand and a 2-liter soda