For a 72 hour kit, I pack 1 liter of water, 1 lb pemmican, a butane lighter, strike anywhere matches in a waterproof tube, a straw tube water filter, 5 white fuel cubes, 4 square feet heavy duty aluminum foil, a pvc rain poncho, two large black garbage bags, 10 feet of duct tape, 10 yards of 110 lb test dacron fishing line, 4 safety pins, 6 medium black nylon wire tie wraps, a small LED flashlight, a small first aid kit, a travel pack of kleenex in a ziploc bag, and three tea bags, also in a ziploc bag. That doesn't include what I normally keep on my person.