e-floor

With black and white electronic paper being commercially released in britain in march 2006/7, I don't doubt that the colour version will follow within a short number of years.
Another application for this - as opposed to computer screens, would be decoration - for example, imagine yourself waking up and trudging to the bathroom. You open the door to be greeted by the calming sound of waves played from hidden speakers, you look at the floor and see sand, at one end of the room, waves lap around your toilet.
You step gingerly toward the sink, hearing a faint crunching sound every time you take a step, you look down and the sand has footprints in it. A crab ambles past, and you tread on it, crushing it into the sand.
The floor could be a blank canvas - saving the impressions of your feet on it as you walk, or making shock-wave images erupt from beneath your feet when you take a step.
If you feel slightly more vindictive, a generated birds-eye view of a city scape could be played onto it, leaving destruction wherever you pass.
The effect would be achievable by using electronic paper (See the link just incase you haven't heard about it), the e-paper would cover the floor, being beneath a clear layer of linoleum-like material (possibly linoleum), and a generated image of a beach (Or chosen scenario) would be played into it - fully interactive, pressure sensors would allow for it to sense your footsteps and alter the image accordingly.
The same technology could be applied to wallpapers, allowing choices of colours/scenes to suit the floor/personalised creations allowing you to draw on them with your fingers or upload personal pictures to it.
The wallpaper could also have applications elsewhere around the home, such as an alternative to a TV.