Radiant heat that tracks and focuses on you as you move around the house. The reduced the heating of the house but still keeps you warm.
A digital camera with built in GPS, that will record GPS location, direction of photo, and time with all digital images. To make it a true Log camera, it should include an encrypted hash of the GPS signal and image to make it difficult to forge the time/location stamp in the file. The stamp will ideally not impact the image.
Separate the need for wire between the video player and the screen. Have the video player play to the wireless router. Have the monitor pick up the wireless signal and display it. This allows flat screen monitors to be located in various locations, all playing the same wireless signal.