Tiny code snippets or links
Instead of saving them on iCloud notes or on Sublime Text or in note-taking apps - use Paste
Your SSH keys ~/.ssh
Others
Browser bookmarks, settings, history, etc.I recommend using Chrome Profiles.
Passwords, server logins, and sensitive stuff.
I recommend using Bitwarden — the free tier is good enough for my personal needs and is open-source.
Your Font files ~/Library/Fonts
Cloud Storage
This might sound crazy but files are all synced to the cloud. (Well, except for the OS and everything in the Home folder) I find Google One to be the more economically viable option. If you’re fully immersed in the Apple ecosystem, iCloud might be a good alternative too.