Probably a good idea to go see how much storage will be necessary...

https://slrpnk.net/post/28978076

I stumbled across this sort of fascinating area of doomsday prepping a few weeks back.

prepperpress.com/usb/

A nice addition to that, don’t just make it a USB, but a raspberry pi. So you’d have a reasonably low-powered computer you could easily take with you.

Not suggesting this one as it seems a bit expensive to me, but prepperdisk.com/…/prepper-disk-premium-over-512gb…

Build a Bug Out USB

A USB flash drive lets you carry mountains of survival information in a low cost, lightweight, compact device. Some preppers might criticize the idea because it requires an electronic device…

Prepper Press
at this point why not just use a phone running postmarketos?

Cause if ya wanna go overboard like I did, 1TB of NVME storage, can add with SD Card if necessary. 16GB RAM. Very little learning curve for my part as I use SBCs often. Plus almost every Docker container and program I want works on RPi without any hassle.

There’s also more robust guides and community for RPi.

Just my thoughts.

You’d first have to buy a phone that can run postmarketos and these are much rarer than I wish they were. Is there even anything new that can run it? Pine64 stopped making phones and said they’ll make a new one when they can make it RISC-V.

Fairphone maybe I guess. 4 is listed as a supported device, but someone has gotten it working on 6 too.

there’s lots of devices it runs on iirc, something like the pixel 3a can be had for less than a new rpi3b+ where I live
But hardware ages and dies. Will you trust a pixel 3a for the next 10 years? I’d rather have a new device for this.
Last I checked (3 years ago) postmarketOS drained the pinephone battery in record time :(