It’s not a Muppet, of course. It’s simply the eyepiece of an antique mechanical kaleidoscope.
This is the front-on view of the Mystery Object I posted a few hours ago.
I do not crop, enhance or post-edit my images in any way. Shot with a Pentax K100D, using a Sigma 18-125mm lens. F5.6, 1/60 sec, ISO 800, focal length 125mm.
Featured by my co-host in PASSIONATE ABOUT VINTAGE, May 2010.