in car:
Change of clothes (socks, boots/shoes, thermal underwear, boxers, t-shirt, jacket, long shirt, pants, hat, sunglasses, gloves, poncho, belt)
water, food (MREs, canned goods, energy bars)
battery/self-powered radio
Crescent wrench, vise grips,
in home:
water, food (MREs, canned goods, energy bars, boullion cubes)
mess kit (pots, skillet, cups, forks, spoons), can opener
clothes (socks, shoes/boots, thermal underwear, boxers, t-shirts, jacket, windbreaker, sweater, long shirt, pants, hat, sunglasses, gloves, poncho, belt)
hatchet, knives, sharpening stone, shovel
fire, flint, easy starting fuel, mag glass
flashlight, bulbs, batteries, candles
flares, flare gun
gas mask, latex gloves, bio/chem suit
first aid kit (safety pins, gauze pads & rolls, alcohol pads, iodine, bandages, razors, aspirin, vitamins, tweezers, polished steel mirror, small towel, moleskin, lip balm, antiseptics, antibiotics, scissors, Ace bandages, scalpel & blades, )
fishing kit (rod, reel, line, slip shot, hooks, treble hooks, )
guns (handgun, shotgun, rifle), ammo (hollow-points, slugs, buckshot, game shot, various rifle)
2-way radios, GPS, maps
battery/self powered radio
Tent, rainfly, stakes, tarp
space blanket, sleeping bag
folding grill
rope, twine, cord, zip ties, duct tape, braided wire
ziplok bags, garbage bags
bug repellent, sunscreen
soap, tp, toothbrush, towel, comb,
sewing kit
Food: canned chili, canned fruits, water, canned beans, noodles, canned soup, etc.
PS Bacardi 151 and similar liquors have better properties for disinfecting, plus they can act as fuel.