There are plenty of smart-ish watches that aren’t running a full phone OS also, Garmin’s watches for example. You can sync them with tools like gadgetbridge

https://viking-gps.github.io/

exiftool is one I use to tag my images and videos with my name and sort them. jq is another that does a quick export from json

Harder to backup and synchronize also

I usually use viking https://sourceforge.net/projects/viking/