I wrote qlip [0], a stupid-simple shell utility written in 5 lines of Rust that prints your clipboard as a QR code to stdout. I used it as a clipboard sharing utility before KDE Connect fixed their universal clipboard feature. It should compile for any platform that supports Rust, and you can install it to your system in a few seconds using `cargo install`.

[0] https://github.com/toasterrepairman/qlip