As I have a Kermit and Scooter from the Fisher-Price plush line (1974?) And a Sababa Kermit from 2004, I can't really say I want any other plushes....except maybe another Scooter, perhaps.
My true holy grail would be the book "Of Muppets and Men". God, I was able to borrow that book from my state library for 1 week about 3-4 years ago...it was the best time ever. I read that thing cover-to-cover nearly 5 times! And I copied a few of the Richard Hunt pages in them too.
A local bookstore (which has since moved, I believe?) was selling it for about $90 + 7% SC Sales Tax. ...Wished I had a job back then! I would have purchased that so fast their heads would've spun!