documents I use regularly (contract worker so I’m constantly emailing the same things to accounting departments, etc)
current contracts / union constitution and bylaws / published standards / some tables of data I regularly reference for work / stuff I have to reference for workers
any “current projects” like a photo set for a project, plans and drawings, documents and literature for a vacation, etc.
study materials if I’m going for any certifications, so my waiting in line time can be reading up instead of candy crush or whatever
Since my mobile is all ios and I otherwise use syncthing, I use sync.com for cloud storage basically for anything that I’ll want without having to get a laptop out.
I use Bitwarden for passwords and authy for 2fa so that’s all fine.
This also means I can zero a device and have access to this stuff once I load an app back up on the other side of a border, when that’s a necessary step. Not possible with syncthing.