*Blankets, scarves, gloves, extra clothes: Wool or thermal blankets are better for colder climates. Bringing a set of extra clothes is a good idea in case your clothes get wet, tear, or soiled.
*Kitty litter and a small shovel: Kitty litter can be sprinkled around tires to give snow, ice or any slick surface some traction. A shovel is nice to help dig your tires out…should they get stuck in thick snow.
*Jumper cables: If your battery is drained and you need a jump, jumper cables are a must. Make sure they are at least 12 feet long. It is not always easy to fit the charging vehicle adjacent to your stalled vehicle. An even better option is a battery-powered jumpstart. It's the same as the jumper cables, but you can jumpstart your own car using the jumpstart's battery power.
*Two quarts of oil, gallon of antifreeze: Oil leaks and just regular usage can cause levels to become low. Keeping an extra couple of quarts in your trunk is just good practice for being prepared. A gallon of antifreeze or coolant is also a good thing to have on hand. If your car is overheating or working in record cold temps, fresh antifreeze is a must.
*First aid kit: Don't forget to include essentials such as bandages, Band-Aids, gauze, tape, scissors, aspirin (or other pain killer), antiseptic cream or spray, etc.
*Spare tire, jack, tire inflator: Getting stuck with a flat tire is no picnic. Make sure your spare tire is in good condition. Have a jack on hand and when in doubt tire inflator, such as Fix-a-Flat. Also a tire-pressure gauge will help make sure you are not over or under inflating a tire.
*Food and water: Food and water are essential to keep on hand in case of an emergency. Granola, protein, or energy bars have nutrients and are usually high in calories to help you keep up your strength.