Special shout-out to KDE Connect. You can instantly share files between your phone and your PC, remote control your PC, share your clipboard, notifications and so much more. With two clicks, you can share a link that instantly opens on your PC. It’s all so smooth! And it’s also available for Windows if you need it.
I have the same thing with my best friend. It’s been almost 15 years now and we trust each other blindly if we use the word.