I'd feel a bit guilty about remapping somebody's Windows keyboard if I was using their machine for some reason, since even if I had my own user account, the key

I'd feel a bit guilty about remapping somebody's Windows keyboard if I was using their machine for some reason, since even if I had my own user account, the key mapping solutions tend to be global. They'd end up mystified about why the caps lock wasn't working, and it would be basically impossible for them to fix.