I have a Dygma Raise which is a ~60% keyboard and uses layers. My layer 2 is full of useful macros. I need macros even for the keyboard arrows because my Keyboard doesn't have arrows (arrows are layer2+hjkl or layer2+esdf). I also make heavy use of custom mappings in Vim and Bash aliases.

I have a macro for ctrl+shift+v on my Keyboard since it's the Evolution (Linux mail app) shortcut for moving emails. I also have macros for ctrl+alt+left and ctrl+alt+right to switch desktops more easily.

I have a vim macro "<leader>ji" that does "<esc>:e src/dir/i-always/go/to/prefix_" and "<leader>jv" that does "<esc>:e src/other/common/dir/filename_prefix_". Also "<leader>r" types "Reviewed-by: dyingkneepad <dyingkneepad@domain.invalid>".

I also sometimes think about implementing a keyboard macro that does a BnB combo in Skullgirls :). Maybe one day lol, but that's cheating and I wouldn't do it online (also I'd get screwed on whiff or block). Maybe I could use just Xautomation for that (that uses libXtest).

But the most useful of all, by far: alias s='cd ..'