Virtual reality helmets will soon be a household thing, and thinking of what this could do for hypnosis. There is this rollercoaster demo that alot of people have tried and everyone says their mind actually thinks they are on a rollercoaster and they feel it.
This leads me to think that this would be insane for going into deep trance. The view could be the falling elevator and such and maybe things that help suggestions work. Your mind thinks whatever you see in VR is real, so that should be amazing for hypnosis I think.