Put a fire starting kit on your feet. When out in the wilderness, it can be a good idea to take along a backup fire-maker, just in case your matches get damp or rubbing sticks gets you nowhere. With this in mind, Survival Laces include a small fire starting kit, and some fishing line too, just in case you ever need them. Of course you can also do all the traditional things with them: hang yourself, garotte a companion…EVEN tie your boots: https://www.kickstarter.com/projects/1268063329/survival-laces