Ben Heckendorn brings gladness to my heart with his clever mods and amazing home-built engineering.  This latest beauty brings you the Atari, including cartridge-as-sunshade, in a portable format.  Here’s the link to the Engadget post, and here’s the link to Ben’s page for this project.  It’s not quite nuclear fusion, but’s it’s right up there on the coolness level.  While you’re there, take a look at some of the other projects.  Definitely gives one some food for thought about what’s possible when you’re smart and so forth.