I'm not 100% what extent Universal utilizes animatronic (I suppose that's what they'd be) props for HHN like a regional haunt would. I wonder how some of the effects can be pulled off? Will the bed be able to rise up and shake? Furniture moving by itself in general Is this something that can be performed by backstage people?
I can't think of any robotic or animated props besides I think the guy in FvJ who was being puppeteered by Freddy and the floating book effects in dead end/monsters and mayhem.
Final note. Can't wait to see the head spin in person, hopefully a well done Regan puppet. If she's as good as gnarly as the wolves were in AWiL last year then this should be nightmare fuel