I rotate two 8 TB USB hard drives between home and my locker at work, every month or two. Full-disk encrypted, of course. This covers my entire system and media

I rotate two 8 TB USB hard drives between home and my locker at work, every month or two. Full-disk encrypted, of course. This covers my entire system and media files. For /etc and my source code repositories, I use restic and cloud storage, because this data is small (< 1 GB). (Also, I'm on rural internet, which is metered and slow. So I can't use cloud backup for the big stuff.) The whole system is not quite 3/2/1, but it's close enough for me.