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". 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". 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".
I'm not quite crazy enough to say that epinephrine will help you survive the inevitable zombie apocalypse (you can go here for that). I'm just suggesting in a roundabout way that if you happened to be in a situation where something was trying to eat you, the increased heart rate and blood flow to your muscles brought on by a well-timed dose might just save your life.
Each type you listed (save a couple) will have its uses in a community (group if you will), generally having a small trusted group with each having several skills in the various fields (prepper, homesteader, and survivalist) I believe would be an effective team, though as each group works together would it not be best to ensure that each has overlapping skills in case of injury, death, or other reasoning they can not fulfill their duties?
The increased inflation rate in the 1960s, the US monetary devaluation, the continued concern over a possible nuclear exchange between the US and the Soviet Union, and perceived increasing vulnerability of urban centers to supply shortages and other systems failures caused a number of primarily conservative and libertarian thinkers to promote individual preparations. Harry Browne began offering seminars on how to survive a monetary collapse in 1967, with Don Stephens (an architect) providing input on how to build and equip a remote survival retreat. He gave a copy of his original Retreater's Bibliography to each seminar participant.
Learn how to use it – What good is a compass if you don’t know how to use it? Not much. How about your Tenacious Tape? Or your GPS locator, or multitool? It’s great to head out into the wilderness with all the appropriate survival gear but if you don’t know how to use it when the time comes it will be as useless as the “g” in “lasagna”. Once you’ve decided what you need and have purchased everything take the time to familiarize yourself with what you have and how it works. Take the GPS locator out into your local state park and practice with it. Practice starting a fire with your emergency fire starter. Buy some extra Tenacious Tape and a cheap raincoat and practice cutting it up and making repairs. Take your survival knife out on a short hike and see what its practical limitations are when it comes to cutting wood etc. You might need a larger one or one with a longer serrated edge. The bottom line is this: make sure you know how to use the survival gear you have before you leave civilization behind and head into the woods.
In this review guide we’re going to shine a light on 21 essential pieces of survival gear everyone should seriously consider having in their survival pack. We’re going to concentrate on survival gear aimed at aiding those engaged in outdoor activities and not those forced from their home by natural disaster, although some of these products will also be useful in those types of situations. We’ll start by highlighting 3 pieces of must-have survival gear; those things we would not venture into the wilderness without, and then move on to other valuable survival aids you’ll want to think about packing.