I use Syncthing with a "Documents" folder for that. All the stuff I want to keep goes there. Photos go in a different folder that is also synced with Syncthing.

I use Syncthing with a "Documents" folder for that. All the stuff I want to keep goes there. Photos go in a different folder that is also synced with Syncthing. When I want to send a file, I just put it in Documents. Works over WiFi or internet. Bonus: the file is replicated on a server, so it's available and in an easy to find location.