I am glad this thread got resurrected, because reading it just taught me how to re-enable Do Nothing for all actions. I dont know why it was disabled for any of them, but Im happy to have them back.
I have a lot of Activator actions set up, which I may get around to listing at some point. For now, here are a few of my favorites:
Lock button short hold = SpringFlash (toggle torch)
Home button double tap = LastApp
Home button short hold = Show switcher
At Springboard, Home button single press = Show switcher
At Lockscreen, Home button short hold = Unlock
At Lockscreen, either volume button, or double-tap clock = ProCamera
Swipe Status Bar either direction = SBSettings
Slide-in from Top/Top-left/Top-right = Do Nothing (mostly disables the NC)
Both volume buttons = Airplane mode toggle
Volume Down, Up = Rotation lock toggle
Volume Up, Down = Monocle (set to hide/unhide Status Bar)