Most of these work in most programs using readline: https://readline.kablamo.org/emacs.html

It's fun to blow people's minds by cutting/copying/pasting _in the shell_ without touching the mouse and using Ctrl+u to clear password inputs when you make a typo.

Ctrl+l clears the screen.

Ctrl+[ is the same as escape, which I like more than reaching for the esc key.