Hahahaha! I have some great visuals in my head now of babies flying across the room. Thanks for that 
But in all seriousness, the 'thing' I'm thinking about mounting the hardware on is something like this: http://goo.gl/Mp8ILI
So putting something like you had mentioned on the bottom of the legs that makes it move, maybe a 1/4" at most. In this case, would you still recommend a thread and a servo motor?