Hey! I'd like to start off by saying this probably isn't the most efficient way, but you can be watching a movie while you do this on a second monitor.
We're going to be mining the Infernal Brutalizers in central Aszuna right outside of Illidari Stand. There's two guards who will fight one of the Infernals and kill it for you. Once it dies, just run up, mine and proceed to AFK. You can realm hop as well to maximize your profits, but if you're going to be actively farming it'd probably be better to just farm nodes.
Thanks for reading, and happy rock-guy-clicky and shiny coin making!