Demo Vision is one half of an odd and rare Game Boy devkit
If you dig giant hunks of metal with marker scribblings all over them, then you'll want to cruise by this eBay auction for a Game Boy Demo Vision unit. The dev kit allows your Game Boy game to be displayed on your TV, like with the GameCube's Game Boy Player, only without the border.
As tempting as being able to use it may be, you will need a special kind of Game Boy unit in order to interact with this device. So, unless you have that matching bit, you're not going to be able to do much with this.
[Via Go Nintendo]
