I'd love to see this coupled with a cheap thermal-IR camera, or microphone array (to see the spatial localization of sound around you; e.g. where is that darn leak coming from?!), or really with any sensor that collects spatial information outside the range of natural human perception. Some of these exist already in other forms (e.g. 'night-vision' goggles), but the power of this + that would be incredible, especially when you start combining multiple sensory 'images' into one seamless visualization.