I see many posts asking about what other lemmings are hosting, but I’m curious about your backups.
I’m using duplicity myself, but I’m considering switching to borgbackup when 2.0 is stable. I’ve had some problems with duplicity. Mainly the initial sync took incredibly long and once a few directories got corrupted (could not get decrypted by gpg anymore).
I run a daily incremental backup and send the encrypted diffs to a cloud storage box. I also use SyncThing to share some files between my phone and other devices, so those get picked up by duplicity on those devices.
I have an a shed I built a year or two ago, but it’s about 100 feet from the house with no electricity to it. I’ve considered running power and ethernet to it and connecting those drives to a raspberry pi. That way I could rsync my backups over SSH to an “off-site”, aka, not in the same building, backup on a more regular basis, and also not have to worry about the potential damage that might occur from hauling them around in a car all the time.