Before you even think about self-medicating or treating wounds, you should get a reasonably systematic understanding of emergency medicine. I recommend getting "Wilderness Medicine: Beyond First Aid" ($10): it is accessible, focuses on situations where diagnostic and treatment facilities are limited, and goes well beyond the basics. Just as importantly, it avoids weird spiritual, homeopathic, or naturopathic claims that often creep up in prepper books.
Do people buy them? Sure they do. Sales aren't the goal, though. The idea here is to induct people into a lifestyle, because these same people sell things like wilderness survival courses, subscriptions to survival food delivery services, tools and weapons, and vitamins. Prepping is big business, with Yahoo! Finance reporting that as many as 3.7 million Americans identified themselves as "preppers" in 2013, fueling demand for a multi-billion dollar industry.
Thanks for the comment “Barn Cat”. I do agree that storing canned beans makes it much easier since they are already prepared. That would be a huge help when you need something to eat in a hurry. I am inclined to say that having both dried beans and canned beans would be ideal for food storage. Canned items typically do not last as long. Another fact is that you can also sprout dried beans and it increases the nutritional value. Wheat can also be sprouted, ground into flour to make bread and cooked to make a hot breakfast cereal. Wheat, if stored properly can be stored up to 25+ years. I personally like to have a variety my food storage.

With all this out of the way, let's get back to a gadget mentioned a bit earlier in this guide: Geiger counters. Unless you're an emergency responder, you may not really need one. That said, such a device could conceivably help you stay informed and keep your family and friends at ease - and I don't mean just the remote possibility of a nuclear war. Consider all the bogus rumors of contaminated water and food in the aftermath of Fukushima; a radiation meter could have put any such speculation to rest.

One major upside of freeze-dried food is its convenience. Since all its water content has been removed—via a process that involves exposing food to subzero temperatures, while removing the resulting water vapor with a vacuum—it’s easier than canned goods to transport on the fly. To “cook” Wise Company’s six-grain Apple Cinnamon Cereal, you just boil three and a half cups of water, dump in the powdery contents of the bag (minus the oxygen absorber), and cover the pot for 12 to 15 minutes.

We thought about the generator / gas dilema for our filled 2 freezers, and decided to start our venture into solar with generating enough energy to run those. So far so good.We know that as long as we can run them for 12 hours a day, the food inside stays well frozen and safe. New England winters are cold enough at night that it keeps the garage cold where the freezers are, so thats a help. If we only open the freezer long enough to take out enough food for a few days, they can thaw in the fridge and that helps too. I love my freezer, lol.
Oh, one more thing: when trying to reform your fiscal habits, it can be useful to think of money as a unit of debt owed to you by the society, awarded in exchange for your hard work (or as a consequence of some other fortuitous event). Despite the popular saying, when allocated wisely, that money can buy you safety, comfort, influence, or true friendship and happiness. It would be foolish to squander it on trinkets - just as it would be foolish to take it with you to the grave. My advice is simple: make every transaction count.

The adult can use the books or a itablet to teach. I home schooled our children for several years and it was always a read, touching and seeing experience on everything. Not everyone is a reader, but the parents can have the information on hand. If it is in an itablet and has been down loaded already it will still be on the tablet when the net goes down. You just need a solar charger. Math and history along with cursive and English can be taught many different ways. I’ve used sand, shaving cream, chalk, and water to teach.
The leader in emergency preparedness kits, supplies, and survival products for homes, first responders, offices, schools and more. 72 Hour disaster supplies in ready to go bags. After an emergency, you may need to survive on your own for several days. Being prepared means having your own food, water and other supplies to last for at least 72 hours. A disaster supplies kit is a collection of basic items your household may need in the event of an emergency.

One suggestion to consider. Have you tried carrying a bow saw blade? They ‘curl’ up quite small in a tin/pan and can be easily used to construct a frame for a bow or even buck saw (how to is in multiple youtube videos and bushcraft books such as Richard Graves or Ray Mears) – which makes those woodland chores so much easier than with a small folding saw.
At the time, Americans were marvelling at engineering advances—attendees at the 1893 World’s Fair, in Chicago, beheld new uses for electric light—but were also protesting low wages, poor working conditions, and corporate greed. “It was very much like today,” White said. “It was a sense that the political system had spun out of control, and was no longer able to deal with society. There was a huge inequity in wealth, a stirring of working classes. Life spans were getting shorter. There was a feeling that America’s advance had stopped, and the whole thing was going to break.”
Having a medium-size bucket ($8) at home is a must, too. If you own a bicycle and are expecting to use it in emergencies, it would be wise to throw in a bike tool ($20), several tire levers ($5), a patch kit ($5), one or two spare tubes ($10), and a portable pump ($10). Finally, for those who are worried about the decidedly unlikely prospect of having to escape home and fight off radscorpions in the wilderness, a a lightweight hatchet ($25), a folding saw ($20), a larger fixed-blade knife ($24), a folding shovel ($25), a compass ($9), and some matches or a lighter in a waterproof container can come handy in several ways.

Astronauts are provided with survival kits due to the difficulty of predicting where a spacecraft will land on its return to earth, especially in the case of an equipment failure. In early US space flights, the kit was optimised for survival at sea; the one provided for John Glenn on the first American space flight in Friendship 7 contained "a life raft, pocket knife, signaling mirror, shark repellent, seawater desalting tablets, sunscreen, soap, first aid kit, and other items".[5] A survival kit was provided for the Apollo program which was "...designed to provide a 48-hour postlanding (water or land) survival capability for three crewmen between 40 degrees North and South latitudes".[6] It contained "a survival radio, a survival light assembly, desalter kits, a machete, sunglasses, water cans, sun lotion, a blanket, a pocket knife, netting and foam pads".[7]