I lost my primary drive on Friday, and I’m having to rebuild a bunch of stuff. I didn’t document minor things like this before, so I am this time around. Hopefully someone else finds this useful.
numlockx There are plenty of different ways to enable NumLock on login, including a decent manual approach. An official X extension, numlockx, can handle it automatically for us. There’s an unofficial mirror available to build the package from source, or you can check for it in official channels.