12. Mirror Survival
Having two people can also help you cover more ground. The problem is you do not want to get lost if you have to split up, so some form of communication is key. Most women pack mirrors in their bags, allowing you to use one or a few to signal back and forth. For the average guy, sadly you need to get more creative.
You can make one out of the water if it is cold enough too! You’ll just need to weave out a handle and put water in the middle then allow it to freeze. Merely knock off the chunks in the back and you now have a makeshift mirror to help with signaling. There is also the possibility of making glass but that’s far too complicated.