These days designers are changing the look and feel of almost all kinds of hardwares. I happened to see a concept from Dell (Dell XPS Baton).It mainly consists of two rollableflexible screens. When being transported around the OLED screens roll back up in the baton. When they are pulled out an electrical charge is sent down the screen making them firm and transformed to a laptop.

It can be changed to an e-reader all you got to do is to just roll out one of the screens. Should want to use it from a desk you just plop it into the docking station which is attached to a regular monitor and keyboard. 

Photo Credit : inquisitr