[bravesoul2]

Or even just install local software. Get a computer that lasts (have at least one non laptop). Have maybe some maps and Wikipedia locally.

Maybe walkie talkies too? Pretty simple to use!

[fer]

Fun fact: At least one ham radio store ran out of walkie talkies during the power outage in Spain, also there was plenty of chatter on 446 when it's normally quite quiet.