I toggle Num Lock a few times in the rare event my workstation doesn't immediately respond, if the status light on my wired keyboard remains on things are likely good and borked. Though, I feel like this was more a more dependable test in the days of PS/2 (and PC/AT before that) than it is these days with USB because the former dumb serial interfaces were implemented at such a low level.
As far as Caps Lock is concerned I've had that mapped to Ctrl for as long as I can remember.
As far as Caps Lock is concerned I've had that mapped to Ctrl for as long as I can remember.