Perhaps this piece is a little hard to see at this size, but the improbable nest rests on a large pointed, rusty metal piece which is attached to the old tape measure hanging from the twig. All are enclosed in the drawer of an old treadle sewing machine with on old fence finial on top. The image of a grimacing mother holding a child as well as part of a child on the right side creates the story. The detail is pictured below.
(Improbable Nest copyright by Diane Lou 2010. 20"x5"x5")