I could, say, hook up an mTurk-specific keyboard that sends its own messages to mTurk scripts and don't require their own obscure keybinds. No more Ctrl+Alt+Shift+[key] and just crossing fingers that it doesn't conflict with some other keybind, because the events it would trigger would be specific to that hardware rather than generalized keypress events.
Or I could have a hardware-based Arduino/PI HIT Monitor that connects directly to the Internet and logs HITs regardless of whether I'm at the computer or whether my computer is even on. Then, when I hook up my computer, it could check these HITs for me.
You could have a simple little scrolling LCD that alerts you of all sorts of things that you want to know, but that a monitor would just be too much for. Maybe you could have your browser notifications pop up in a separate LCD hardware display instead of onscreen, so they stay out of your way.
Lot of things it opens the door for. When it comes to creative tinkering, sometimes you don't know exactly how a new idea will come together. But new technologies always have that glimmer of new possibilities.