Look Back and Then Look Forward

A couple of days ago there were two articles in the Wall Street Journal Thinking About Tomorrow and Predictions of the Past that talk about looking at what might happen 10 years from now and what we thought would happen 10 years ago. It's very conservative looking at trends that already exist and extrapolating based on those trends which is of course very practical, but I wonder what mini-trend is out there now that will explode into the forefront. What item will we all have in our pockets or homes or cars that wasn't there before and was just some crazy gizmo that someone was working on in their basement. What will explode that fast?