I suppose the only thing here that really interests me is the backup server, and even then I've got enough (potentially misplaced) faith in iCloud/Dropbox/Googl

I suppose the only thing here that really interests me is the backup server, and even then I've got enough (potentially misplaced) faith in iCloud/Dropbox/Google photos to not spontaneously combust at the same time as I lose/break my devices. Out of interest, what software do you use for the backups? Is it something like Borg/rsync and a cron job, or is there a nice batteries included solution?