This Rock Bug is courtesy of »hobo« via Flickr. I like the similarity of this to the LEGO scorpion, though this one is brick built. He’s used two rock monster arms for the front pinchers, three sets of binoculars held together by a small lever (not visible, but he points it out in the comments on Flickr). Follow this up with some minifig hands on the sides to act as the legs, as well as one minfig hand off the back as a tail.