All of our data is backed up 2N+C - two NASes and an encrypted rclone in S3. This includes family videos, photos, and all "paper" records (Paperless-ngx for the win).
I've documented my homelab in Joplin, and stored all my homelab passwords (and Bitwarden password) in a Keypass database. Those files are stored on a USB stick in our household safe, along with a printed letter instructing my wife to pass everything on to one of my brothers.
The first half of my homelab manual details how to return our smart home to un-smart. The second half contains detailed technical data on how my entire home network hangs together.
I'm currently thinking about some sort of dead man's switch, where copies of the letter and files from the USB stick are auto-emailed to my wife and both my brothers in the event I don't check in for a period of time - say two weeks or so. That way, should the house burn down with only me in it, my wife will still be able to get to all of our records and memories.
I switched to Obtainium some time back, and ended up uninstalling all F-droid clients altogether.