Origami Santa Claus / Origami Santa's Visit (Robert Harbin)
An other golden oldie, also folded from a rectangle 2:1 kamipaper. This was the first 'chimney'-Santa Claus I ever saw.
Diagrams Origami Santa Claus by Robert Harbin in the book: Creatieve life with creative origami vol.3
You can find the diagrams also on the CD: "The Origami World of Neal Elias by Dave Venables and Marc Cooman.
Then this model is called: origami "Santa's visit".