I wanted to comment this (Tom Scott used it to map buttons across 15 keyboards to unique emojis on a single computer) but it looks like as of March 2023, Luamacros has been abandoned :(
> Let's officially state what has been a reality for the last several years. I don't use Hidmacros/Luamacros any more and have no interest in improving it or even fixing existing bugs. I invest my personal time in other things which are more interesting for me now. So please don't expect any support from my side. I'm also removing all donation buttons.
> Let's officially state what has been a reality for the last several years. I don't use Hidmacros/Luamacros any more and have no interest in improving it or even fixing existing bugs. I invest my personal time in other things which are more interesting for me now. So please don't expect any support from my side. I'm also removing all donation buttons.