I have been following the developments in the market for pocket projectors. If they work, they have the potential to create a whole new setting in which to give presentations (conference auditorium, small meeting room, and now the white wall in the local coffee shop).
The (obvious) problem with the early devices was that they lacked power. Here is a new device that is a bit bigger/heavier, but promises to deliver more performance: the Beambox Evolution R-1
Via engadget.