Saw these and thought they were interesting. One of them I don't have any idea of what it is.
http://www.pbase.com/john_cooper/image/113436725
http://www.pbase.com/john_cooper/image/99363374
http://www.pbase.com/john_cooper/image/113436725
http://www.pbase.com/john_cooper/image/99363374