OLPC XO-1

Lighter than a lunchbox with the size of a textbook! It´s designed to be distributed by governments and nongovernmental organizations to schools all over the world
One Laptop per Child, Nicholas Negroponte, Rebecca Allen, Mary Lou Jepsen, Mark Foster, Michail Bletsas, V. Michael Bove, Yves Béhar, Bret Recor, fuseproject, Jacques Gagné, Gecko Design, Colin Bulthaup, Squid Labs, John Hutchinson, Freeplay Energy Plc. and Quanta. XO Laptop from the One Laptop per Child (OLPC) project. 2005-ongoing
The XO is the first generation of an inexpensive computer conceived by One Laptop per Child, a nonprofit program begun at the MIT Media Lab. 

Many of its characteristics serve at least two purposes: the Wi-Fi antennas double as covers for the USB ports, the handle serves also as an attachment point for a strap and the protective bumper also seals to protect from dust. 
File:OLPC-Frame.png
 The “neighborhood view” showing children collaborating on various tasks. By clicking on it communication by Wi-Fi is activated.
The screen has both full-color and  reflective high-resolution mode that makes it readable in bright sunlight, and a wide track pad doubles as a drawing and writing tablet. 
If electricity is not available, the computer can be recharged by a pull cord that works like a yo-yo.