I can see endless possibilities for carving that brass button-shaped thing into tools for pressing glass! I can hardly wait to find out exactly what that it is and how she did the carving, what kind of handle is the foot being held in, etc. Thanks Bobby for your generous spirit in sharing your great ideas! I'm not particularly interested in the footprint motif, but the possibilities for the technique in general are just tremendous~
(I wanted to find a "hats off to Bobby" smiley, but there wasn't one!)
Jo