Some years ago I attended a briefing by an L A Fire Department information officer. He held up a thumb drive which he carried on a lanyard around his neck and said, “This is my life.” By which he meant copies of every document and photograph which was important to him. And he urged everyone in the audience to do the same.
The reason: After the “big one” there are going to be areas of the city consumed so rapidly by fire that the residents will have to literally run for their lives.
What an excellent idea.