I stumbled across this Emacs survival card, which I hadn’t seen before. It’s very much like the Emacs Reference Card but seems more useful to me. Of course, you may disagree but it’s worth taking a look at it to see if you find it useful.
I don’t print out cheat sheets anymore but I do bookmark them for those occasions when I need a quick reference. I will definitely be bookmarking the survival card. At least on my Mac, survival.pdf is included with Emacs so I can use it offline and I automatically keep it up to date as I compile and install new Emacs versions.