The rules are simple. Winner will declared in 20 years. No bad mouthing ideas you think suck, even if they do. If you see an idea you like, and can expand on it, do so. If you're going to patent it, don't put it here. All ideas are fair game by he who does the work developing it. These can also be used in stories, SciFi and other. ********************** I'll start. Lights will be cheap. I don't mean their initial cost, I mean their use costs. Today we are seeing LEDs and batteries going through the roof on technology. In ten years we'll see flashlights that can stay on for week, months, or even years of continuous use. House lighting will be cool, and cost pennies per year. Home power plants (HPP) will become common. The exact tech isn't important, but it will be relatively cheap. The power grid won't die, but it will have to evolve, and serve as backup. On a related note, house computers will become common too. One of their jobs is to allocate which devices get power from the HPP if the grid goes down. Things like the refrigerator that must keep running. It will offer choices on the other devices. Which is more important at the time, Home Computer or Air Conditioning? TV as we know it will disappear. It will be replaced by the Internet. From a user point of view it will not be that obvious, but we see the beginnings of it now. Wired internet (or FIOS) will not die, probably never, for security reasons. Public Internet will become available almost everywhere, and match broadband speeds, for things like TV and entertainment. Hacking will still be a major problem. Your turn.