Polyhedron Sculpture: symmetries of all kinds combine in this beautiful construction. 30 wooden rhombuses (rhombi?) are connected via 60 wooden dowels to create an icosiedodecahedron frame with 12 pentagons and 20 triangles. The engineering seems especially challenging with respect to determining the precise angles to drill the holes in the rhombus pieces. Found this amazing item on eBay- artist unknown (leave a comment if you happen to know). Posting from the G4G15 conference on recreational ma