The Sony eReader Pocket Edition (PRS-300) is a slim and compact device you should be able to carry anywhere and with the 5 inch eInk screen's paper-like readability you'll be able to read the screen even in direct sunlight. You can choose one of three text sizes to make reading as easy as possible on your eyes. You'll be able to carry as many as 350 books on the internal memory and read as much as 6,800 pages between charges. Included is a carrying pouch and USB Cable. and a variety of covers and other accessories are available. Also available in Pink.
This has a super screen and is the smallest/most compact of the ereaders. It is also made out of metal, so is a nice quality device.