Here's a piece of gear for your bug-out bag that I rarely hear recommended: a cotton pillowcase. Why a cotton pillowcase? Lightweight and not taking up much space, a cotton pillowcase has a myriad of potential uses in a survival situation.
1- Makes an instant bag for collecting wild edibles, kindling for your fire, or anything else you for which you need a good size bag.
2- Can be used to pre-filter water to remove bugs, leaves, stems, algae, and other rubbish before boiling or otherwise treating it.
3- Can be cut into large (or small) bandages, or fashioned into a sling, for first aid.
4- Can be cut into patches to repair clothing (a small sewing kit is a good idea for a bug-out bag).
5- Can be cut into pieces to use as reusable toilet paper (just boil to clean/disinfect before reusing).
6- Can be fashioned into a reusable diaper (just boil to clean/disinfect before reusing).
7- Cotton burns, so it can be used in fire making (it also makes for excellent char cloth).
8- Can be pressed into use as a dust- or smoke-mask.
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