I have spent the last weekend designing and printing a Dev Kit case I made for the Arduboy. It works pretty good, I hope to have cool styles and themes later one but wanted to get my basic model out there so people can start using it if they wish or remixing it.
I love what Kevin has done with the hardware and software, its simple, great for beginners development board for anyone looking to branch into programming.
I hope that once I have a good number of cases out there, to get the development of the software done so I could one day make a Mario/Zelda like game clone or a completely original game.