So I tend to work in zones, I travel a lot and dodge storms and such like, I've been nearly killed by terrorists now three times.
The zone 0 is inside your skin, which is:
- keep yourself physically thin and physically strong. This helps with the basics of being able to jump out of the way, climb out of, jump over, swim, run, etc. That is the ultimately what is your first line of defense. Solar won't help if you too fat to jump out of the way or climb out of the way of whatever like flood water. Not too thin, if what happened is you are crushed in an earthquake and trapped you live off what is inside your skin waiting for rescue.
Zone 1 is keeping alive:
- shelter (clothing, etc).
Zone 2 is improving your situation:
- radio, maps, etc. On my phone I have downloaded offline maps for every place I visit, this allows for the network being down.
Zone 3 is making it not that bad a situation
- so USB batteries, solar
- downloaded stored media (more important for bored kids) so tablets, phones, SD cards, etc. My two phones and my tablet and my Chromebook all have 64GB minimum and lots of media on them.
Zone 4 is making it fun:
- outdoor speakers, barbeques, possibly a Nebula projector?
In general if you know how to camp and be off grid for a week, and you walk / bike / swim / run a lot for fitness then you're significantly on the way to be able to handle most situations.
We both own two solar panels and portable chargers, I have about 100Wh of batteries which combined with solar is close to a family sustaining weeks.
My concern in the USA in particular is the notion if you have a truck and a gun you can handle anything, but that is far from the truth, the trucks floating in Houston flooded roads is a good example.
Finally, the chance you are in the greatest need if you do all of the above is slim, but chances are you then are available to help others, so part of the solution as you made yourself not part of the problem.