Sending keystrokes on any action

Before I starting this post, I'd like to say that this is in fact, legal, as each keystroke sent to WoW is the direct and immediate one-to-one result of a human action.

I'm looking for a program or script (extra points if you use AutoHotkey) that can send a keystroke to WoW whenever I'm performing ANY action whatsoever on my computer, if WoW is in the background. For example, typing, clicking, moving the mouse, scrolling, whatever. What I'm NOT looking for is something that will continuously spam a key without me even being at the computer, as that is illegal.

I'm trying to avoid getting a wrist injury, and after sitting down prospecting and DEing for 4 hours straight yesterday I'm totally fed up with this, as I have much better things to do with my time.

Any help would be much appreciated.

You're asking for a way to make the game do things for you while you do things outside the game. It's a pretty weak loophole you're trying to work. Any means you could find for doing this would be easily translated into "legal botting" simply by changing the key it sends to the game.

If you've got better things to do with your time, then do those other things. Otherwise

/cast Prospecting
/use Obsidium Ore

Bind to mouseup and mousedown and watch a movie just like everyone else. Or take advantage of being a multiboxer - train up alts and split the load among them.