I've never thought of the Xbox 360 as an adorable console, but somehow rabbitrampage of Etsy fame (known for the equally adorable PSX iPhone case) has managed to transform Microsoft's box into a case fit for kawaii.
It's $35 bucks, which isn't too steep considering it's hand made, but you're basically out of luck for the time being, as the Etsy store is completely sold out of 'em. Links on Gizmodo will do that to ya...
Sidenote: The Virtual Boy is just screaming out for a similar treatment.