Hubcap Creatures are sculptures made of hubcaps and other metallic junk.  The creatures are designed by Ptolemy. 

From the website:

Hubcap creatures are made entirely from re-cycled materials. All the hubcaps are found, usually on the side of the road, and therefore bear the scars of their previous lives in the form of scratches and abrasions. I believe these marks add texture and history to the creatures they decorate, and so choose not to fill, overpaint or alter them in any way.