I don't care much about typing speed, but I find hitting wrong keys very annoying, so I simply pull off the keys I never use, like CapsLock and Insert. Works equally well on Mac, Windows and Linux, no special software required :)
I usually pull off the insert and "Windows" keys and most of the keys from the numpad, leaving enough for a second set of arrow keys and not much more.
I have often benefited from recommendations for Things I Didn't Know I Wanted.
Given that Less Wrong is a community of unusually intelligent, critical, and self-improvement-focused people, I suspect we can generate a pretty helpful thread of product recommendations — perhaps even a monthly thread of product recommendations.
Rules: