One of the most enjoyable puppets I ever built and used. "Albert the Alligator" was made from an large stuffed plush toy (24" tall) in much the same manner as described for "Big Bird" in the post above.
The mechanics within "Albert" were designed so his turning and nodding head with big open and close mouth could operated both manually, and remotely. Great fun to perform with! One-of-a-kind, this fellow is.