I stumbled across this article by accident, what a great find.
"Walt Disney's Runaway Brain - Candy Flake Edition" is a great vinal doll packaged in a giant cereal box design.http://www.plasticandplush.com/plasticandplush/2007/05/review_mickey_m.html#more
Follow the link for more info and images!
Not only does it include an incredible figure, but also trading cards and a cool t-shirt sporting rough animation from the 1995 animated short.
Now if only I could afford one...