There's one thing I've been dreaming about since 2004 or even before that, that's a virtual desktop environment, so that we could have a screen that surrounds us completely. No need for bigger and bigger monitors anymore, just one single high resolution (and lag free) display to go in front of your eyes. Although, it could be annoying to have to wear something on your head for many hours straight. Now, we might sort of have that already (someone must have implemented that), but I don't remember ever seeing one.
Hardware wise, which concerns Mr. Heck & Dorn (erhm...), maybe gloves that would allow us to manipulate windows with both hands, pinching in the corners to resize them, etc. (which btw, could probably work better in VR than the "pinch to zoom" we use in touchscreens today), but said gloves would have to be very light and allow for a lot of air flow. What I imagine is something like elastic rings on your middle phalanges, with sensors, connected to a very minimal amount of components on your wrists (like watches), which should communicate wirelessly with a bigger device nearby, if needed.
Another idea is some device that would allow for tactile feedback, something that would not allow me to push my hand further if I touched a wall, for instance. But I don't think that would be ever possible without slotting a chip into someone's brain. 
