This is my cartoony replacement -- sculpted in polymer clay (Super Sculpey) -- sorry that the pic is a little blurry.
And here it is, placed on the nodder. You'll note that it's considerably bigger than the original. I felt that was more in keeping with the tradition of the sort of "big head" caricature style I was going for here. I'm quite pleased with the end results, and hope you'll think it's nifty, too. Making the original head into a bust will have to wait, as I have other work on my plate, and I've taken up too much time for now with this personal project. But one of these days there will be a "Part Two" post for this project!