If we are talking Survival/tactical mostly, then carb and mechanical dist are a must. After a "e-bomb" the medusa effect would render any electronics unusable. That is the extreme though. If you have bugged out prior, then you probably are not in the zone.
Communications will be important, both rx and tx. We need to hear whats going on and be able to comm with friendlies at distance. Big watts help get out. I know many here, do not agree, but they most likely will not be with you when you need it, don't worry about it. Properly used watts can be effective, get a ham license. Learn about RF and antenaes how to make them and direct them.
Ever try to make a phone call after an earthquake? Forget the cell phones. Even if the repeaters are up, they will be overrun by panic calls. I have handheld radios that put out more watts than a CB and can generate DTMF tones to send codes or link up repeaters.
Guns obviously, that is a personal preference what you carry. It will depend on your territory and situation. Knives, many styles. I like knives. Learn the basics of making one, try your hand at knapping one from stone. I would bring along my Bowtech Guardian too, it is virtually silent and scary accurate. The smoke chrome color would have to be dumbed down of course LOL. A couple dozen carbon fiber arrows
Water, lots of it. Food too. Some kind of water purification system. A place to sleep, maybe a roof mounted tent.
Lots of camo and camo paint in spray cans, enough to do a vehicle, support equipment and your guns. Camo nets to cover your vehicle.
Recovery gear: Climbing, jacking, winching, blocking, etc. I have synthetic line on my winch now, but steel may be the choice in a bug out situation, you can abuse it more (JMHO)
A bunch of Bibles. Stash em around. New King James preferably (for me anyway). This will be one of our rights lost after our gun rights are taken, stash em together.
First aid, and even stuff you are not comfortable with or don't know how to use, maybe someone else does know how to use it properly (on you?).
Solar panels, flexible if possible. solar panel regulator(s), a few deep cycle batts will make life easier.
This is fun! Luck favors the prepared.