I think I might have just learned something useful.
I commmonly carry around cotton (although mixed with petroleum jelly). Typically, I am wearing SOMETHING cotton.

I carry a small tube of cyanoacrylate glue (mainly for cuts but I suppose it is also useful OCCASIONALLY as a adhesive).

I just found out that combining the two is a highly exothermic reaction and can result in combustion! Yet another multiple use item.

I will have to experiment with this one tomorrow.

Conway Yee