shelter: Brush Tipi with internal fireplace, a project im working on right now., would use the knife with a batton to cut large peices of wood.
Fire: Providing the knife is carbon i would use a peice of flint or even glass to strike a spark on some crampball fungus or amadou and blow into flame with a tinder bundle.
Water: i would use a disgarded bean can, bottle ect to boil water, i would filter it through my sock using tightly packed moss and sand.
Food: make traps, mainly spring snares, make a bow and practice with it, lots. depending on the season i would gather wild plants ect.
i would spend most of my time trying to improve life and make it more comfortable
Fire: Providing the knife is carbon i would use a peice of flint or even glass to strike a spark on some crampball fungus or amadou and blow into flame with a tinder bundle.
Water: i would use a disgarded bean can, bottle ect to boil water, i would filter it through my sock using tightly packed moss and sand.
Food: make traps, mainly spring snares, make a bow and practice with it, lots. depending on the season i would gather wild plants ect.
i would spend most of my time trying to improve life and make it more comfortable