Pfft, you kids and your fancy toys. This is all you will ever need.
And the epic story of its creation is here:
http://benheck.com/atari-800-laptop-2.
If you have a spare Atari 800 or the 2600 or 800 GS, then you can send it in with some of your monies to this guy and he will make one for you. He actually does all kinds of wack shit with his consoles and other shit.