Distill water
If the water near you is salty, brackish, or just plain funky and you don’t have a filter, boil it, prop your jacket over the top, and place a light rock on top to create a low point. Position your cup or vessel under that spot. As the non-potable water boils, the steam will rise and condense on your jacket then flow downhill and into your cup.
Stay afloat
Trap air in your jacket to create a simple flotation device. Knot the sleeves and neck using overhand knots. Holding the bottom of your jacket in both hands, scoop downward, bringing the bottom hem underwater and holding it there. Twist the bottom like a trash bag to keep your…