When buying food, don't fall for "diet", "reduced fat", "low sugar", or "low carbs" ice cream, yogurts, cakes, pizza, pasta, and so on - the differences are so minor that you might as well have the real thing and stop fooling yourself. Watch out for deceptive portion sizes, too. For example, Cheetos are labeled as 150 kcal per "serving", but there are almost 10 servings in a regular bag! Frozen fries are another great example: they look pretty low-cal until you realize that a serving is just 10-15 pieces or so - certainly not enough to make you feel full.
Who cares if you spent your entire life savings on survival supplies instead of taking vacations with your family or sending your kids to college? They got a real education when you took them into the woods every weekend to teach them how to set booby traps for when the zombie neighbors invade! They can pass on that knowledge to their children! See, it wasn’t a waste!

At the same time, it's not entirely crazy to worry that in some circumstances, the response may not come quickly enough; heck, the Department of Homeland Security says that for the first 72 hours after a disaster, you may be on your own and should have enough supplies to survive. The odds of ending up in a real pickle may be modest, but the stakes are extremely high - and compared to the complexity of preparing to some other contingencies, the cost of stockpiling some drinking water is practically nil. If nothing else, when a calamity strikes, you would have one less thing to worry about.
The No. 1 emergency that most people are going to face is a financial problem, and that isn’t necessarily gonna be the collapse of the American economy. It’s more likely that someone in your family will lose their job, or you’ll have a huge medical expense that you weren’t expecting and can’t pay for. I’m a single parent. About 10 years ago, I lost my job. The fact that my pantry had enough food for several months meant I was able to use my savings and my unemployment payment to keep my mortgage paid.
Coffee and Tea. I am a dedicated coffee drinker and hate the thought of a coffeeless existence! One pound vacuum sealed bricks are the most convenient way to store coffee, they stack well or can be kept in plastic totes efficiently. Tea is another good source of caffeine, and I love a cold glass of iced tea on a hot day. Remember that in a true crisis, you may have to maintain 24 hour watch, and caffeine is a big help in this.

Mylar bags and oxygen absorbers will allow you to preserve many staple grains — rice, beans, and flour — for 30-plus years. Titan Survivorcord is a paracord that includes fishing line, snare wire, and a strand of jute twine infused with wax, for fire-starting. The Inergy Kodiak power generator is one of the most advanced lithium power generators on the market.

Car electricity runs on direct current, but almost everything else is alternating current. What you need: an inverter. Some cars have them built in, but you can get one at a store for less than $40. Use the clamps to attach the inverter directly to the terminals on your car battery. Let the car run at idle and you have 110-volt AC power for as long as you have gas. With a 300-watt inverter, you'll have enough amps to run a laptop or even a television.

That's probably about it... well, all right: this section focused chiefly on the immediate consequences of an outage, but a severe fuel crisis or a long-lasting power grid failure would have profound, cascading effects on the entire economy - probably including out-of-control unemployment, high inflation, product shortages, and more. That said, these are the outcomes we can already prepare for by other means. As for extreme preppers who aspire to long-term energy self-sufficiency, I think it's going to be a difficult feat: even with a solar installation, under constant cycling, the batteries may not last much longer than 5 years. Short of finding a cheap Soviet RTG on eBay, they may simply have to adapt to living without electricity or gas.
In addition to such immediately necessary supplies, some prepper guides recommend purchasing sutures, along with tissue forceps and hemostatic clamps. Such equipment may be useful for neatly closing major wounds in situations where bandages won't do - but suturing correctly requires a fair amount of practice and know-how. For gnarly cuts, skin staplers or skin closure strips + benzoin swabs tend to involve less hassle - and are harder to mess up.
Different locations present different climactic challenges, which you’ll want to factor into your survival-kit-making decisions. Trips through the northern reaches of the globe, for example, will force you to confront very cold temperatures. This may make things like emergency hand warmers and hot chocolate important in your survival kit. By contrast, you’ll want to prepare for heat stroke, snake bite, and torrential rain if you are hiking or camping in the tropics.

Ben had some good ideas. Hiking in the back mountains of Cape Town can sometimes be tricky as being off the beaten track it is not often you will see anyone. I suggest flares to light up the night sky to attract overhead planes. Also a really powerful long range torch (flashlight) is a must as it will also light up a huge part of the mountain and this will ensure one’s safety. Condoms! Yes but it is not what you think – condoms come in handy to waterproof bandages or protect and prevent irritating blisters. Also handy to keep items like your cell phone waterproof. Chapstick – great for soothing burns and bites and takes the itchiness away. Spare socks.
Vehicular accidents are depressingly common; while defensive driving can limit your risk, the possibility of injuring another person or causing property damage never really goes away. When you are involved in a car wreck in unclear circumstances, or when your statements do not match the words of another driver, video evidence may be the best way to escape criminal charges or to resolve civil claims.
There are several other water purification techniques, including iodine, various types of filters, or even ridiculously expensive desalination systems. The recent Flint water crisis highlights the value of permanently installed and well-maintained RO units. But for short-term survival, my take is that most of the filtration systems targeted at preppers increase costs without offering clear-cut benefits. And really, don't overthink it: if the choice is between dehydration and drinking straight from a scummy pond, drink from the pond.
These documents will assist rescue workers and first responders in identification and in providing you with adequate medical care, if needed. It also would not hurt to include some pictures of yourself with family members.  I like to store this information on a flash drive along with other information such as survival manuals, home inventories and such.
"Mini survival kits" or "Altoids tin" survival kits are small kits that contain a few basic survival tools. These kits often include a small compass, waterproof matches, minimum fishing tackle, large plastic bag, small candle, jigsaw blade, craft knife or scalpel blade, and/or a safety pin/s. Pre-packaged survival kits may also include instructions in survival techniques, including fire-starting or first aid methods. In addition, parachute cord can be wrapped around the tin. The parachute cord can be used for setting up an emergency shelter or snaring small animals. They are designed to fit within a container roughly the size of a mint tin.