I have rambled for years that it will come down to a device, one device that you take with you. Something like a phone, a camera, or watch. but one device that will contain your (computer, communications, information, and $$). We are getting close every day. Phones that are camera’s, MP3 players, have a browser and contain your info. Where we lack is the input and usablity.
Imagine if you will, that any display near you could be the monitor for your device through wireless, and a infrared keyboard or input device could be on any table or surface. You would have an instant computer. With the technology this vision is becoming more of a reality
http://www.smashingmagazine.com/2008/01/07/monday-inspiration-innovative-designs-and-devices/