Radio transceiver, standard VHF marine when operating near inland shore, 121.5 MHz AM VHF guard channel capable aircraft band transceiver to contact rescuers and high overflying commercial and military aircraft visible by contrails, an optional amateur radio if a licensed radio amateur, (see Ham Radio) or an AM/FM/Weather/Shortwave radio receiver to receive precise time for celestial navigation as well as weather information
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.
Some evangelical Christians hold to an interpretation of Bible prophecy known as the post-tribulation rapture, in which the world will have to go through a seven-year period of war and global dictatorship known as the "Great Tribulation". Jim McKeever helped popularize survival preparations among this branch of evangelical Christians with his 1978 book Christians Will Go Through the Tribulation, and How To Prepare For It.

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.

Another wave of survivalism began after the September 11, 2001, attacks and subsequent bombings in Bali, Madrid, and London. This resurgence of interest in survivalism appears to be as strong as the 1970s era focus on the topic. The fear of war, avian influenza, energy shortages, environmental disasters, and global climate change, coupled with economic uncertainty and the apparent vulnerability of humanity after the 2004 Indian Ocean earthquake and tsunami and Hurricane Katrina, have increased interest in survivalism topics.[19]
The only shortage is diminutive size of the primary blade. Other than that it rates inclusion in any serious gear collection just by virtue of the plethora of options it presents you with and the quality of its construction. The handles on the OHT (One Hand Tool) display a graphic of the tool folded in beneath them so you don’t have to waste time guessing in survival situations. And the entire device is designed specifically to be operated with one hand, which in some survival situations is all you have to spare. A great piece of survival gear you shouldn’t be without.
Individual survivalist preparedness and survivalist groups and forums—both formal and informal—are popular worldwide, most visibly in Australia,[91][92] Austria,[93] Belgium, Canada,[94] Spain,[95] France,[96][97] Germany[98] (often organized under the guise of "adventuresport" clubs),[99] Italy,[100] Netherlands,[101] Russia,[102] Sweden,[103][104][105] Switzerland,[106] the United Kingdom,[107] and the United States.[22]
Sometimes there just isn’t the material available to create an emergency shelter. In that case if you have the Survival Shack Emergency Survival Tent in your survival pack you’re ready. With all the heat retention ability of the Mylar emergency blanket and the ability to provide real shelter in just minutes the Survival Shack Emergency Tent is genuine survival gear.
The communications equipment may include a multi-band receiver/scanner, a citizens band (CB) radio, portable "walkie-talkies" with rechargeable batteries, and a portable battery-powered television. The power supplies may include a diesel or gasoline generator with a one-month fuel supply, an auto battery and charger, extension cord, flashlights, rechargeable batteries (with recharger), an electric multi meter, and a test light. Defense items include a revolver, semi-automatic pistol, rifle, shotgun, ammunition, mace or pepper spray, and a large knife such as a KA-BAR or a bowie knife.
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?
It’s bad enough being injured or lost in the wild but things really get bad when the weather closes in and you can’t get a fire started to stay warm and prepare food and hot drinks. That’s where Ultimate Survival Technologies’ Wetfire Tinder comes in. Developed specifically to help you get a fire going in the pouring rain if necessary it’s without a doubt essential survival gear.
There are a few basics to remember when it comes to finding your way out of the wilderness like finding a stream and following it downhill. This will keep you near a water source and take you out of the worst weather toward civilization. However if the weather is bad and there are no streams to follow you’ll need another method of navigation: the compass.