If you live in an area that experiences natural disasters that could result in an evacuation, it’s crucial to have a pre-packed bag with sufficient supplies for traveling. Convenient “grab ‘n’ go” survival kits have everything you need to stay safe, and well-fed while making your way to safety. Food, water purification tablets, personal blankets, and other necessities are provided in a duffle bag or backpack, so you don’t have to take the time to gather supplies before heading out. Typical kits contain enough food and water for 4 adults for 3 days.
Cigarettes will also be hugely useful for starting fires and saving coals (as any fan of post-apocalyptic literature knows, this is of great importance). The filters can be used to clean water, although you'll need the patience of Stephen Baldwin to pull it off. If you do manage to live for longer than a few weeks without plumbing and Internet, you'll be able to protect your budding prepper garden by soaking cigarette butts in water and spraying the resulting chemical-laden tobacco juice on your produce. This is a technique already in use by people too impatient to wait for the apocalypse, though it is ironic and entertaining that they consider using cigarette-butt sludge a "natural" way to ward off pests.
The Cold War era civil defense programs promoted public atomic bomb shelters, personal fallout shelters, and training for children, such as the Duck and Cover films. The Church of Jesus Christ of Latter-day Saints (LDS Church) long directed its members to store a year's worth of food for themselves and their families in preparation for such possibilities; but the current teaching advises only a three-month supply.
For personnel who are flying over large bodies of water, in additional to wearing a survival suit over cold water, a survival kit may have additional items such as a small self inflating raft to get the aircrewman out of cold or predator infested waters, flotation vests, sea anchor, fishing nets, fishing equipment, fluorescent sea marking dye, pyrotechnical signals, a survival radio and/or radio-beacon, formerly a distress marker light replaced by a flashing strobe, formerly a seawater still or chemical desalinator kit now replaced by a hand pumped reverse osmosis desalinator (MROD) for desalinating seawater, a raft repair kit, a paddle, a bailer and sponge, sunscreen, medical equipment, a whistle, a compass, and a sun shade hat.
From the SpeedSafe, one hand assisted opening to the 4 position pocket clip to the uber-secure liner lock that prevents the blade from closing on your fingers the Brawler from Kershaw is the kind of safe, effective survival gear you want at your disposal when things get gnarly. The modified Tanto blade has a pointed tip for precision work, spearing or piercing and the high carbon holds an edge longer than standard carbon steel blades. An invaluable addition to your emergency supplies when the weather closes in and you’re miles from nowhere.
To me, the best option is to store emergency food. How much? If you have none, store enough for a few days. If you have enough for a few days, get enough for a week. How much you store depends on what time frame you think you're at risk for having to be completely independent. The early settlers of the southwest liked to store enough food for a whole year and still do to this day!