Wouldn't this be a fun sidewalk... specially if you have children. It could be modified by using a plain concrete sidewalk with only the head ... and perhaps the tail... shaped to resemble a snake and trimmed with mosaic. 
I love this patio area and thought some day I'd have a similar one, but never got around to it... don't think I could build one today. I collected a bunch of flat pretty colored rocks... though... who knows. Maybe.
