I live in a paperful country, and I have no scanner.
Important stuff has a photo taken, and it's likely backed up in my photo archives (Syncthing → Pi Storage → NAS backup).
My girlfriend still uses google and whatsapp, and I tend to send her important media in our chats, so we'd both have to be kicked out of our gmail and whatsapp accounts to truly lose everything there.
One of the tools I found useful is Microsoft Lens mobile app: it's almost as quick as taking a picture of a doc, but it makes it easy to create a pdf of all the docs and bundle up multiple pages.
Over the years, I have lost access of important google accounts. In one occasion, I had a very old google voice number which I used from time to time. At an unexpected time, Google sent me an email asking me to validate that I still needed it within 30 days. At the time, I was traveling and unable to check email for complicated reasons. I ended up losing the Google voice number, which was the 2FA for a number of accounts, which then became irrevocably lost since the number was re-assigned.
Important stuff has a photo taken, and it's likely backed up in my photo archives (Syncthing → Pi Storage → NAS backup).
My girlfriend still uses google and whatsapp, and I tend to send her important media in our chats, so we'd both have to be kicked out of our gmail and whatsapp accounts to truly lose everything there.