Here's a stick model of the "mite" I made throwing a long shadow. It is composed of one B and two A quanta modules and exhibits a surprising bilateral symmetry. Being constructed as it is, it can reduplicate to completely fill space.
I assembled this on October 2, 1981. It's made with D-Stix connectors I got from Edmund Scientific (now available at Nasco) and 1/8"-diameter wooden dowels. My lab book comments: "It's amazing how things really sink in on building a model. The `mite' is really an interesting little guy, a symmetrical tetrahedron which appears as if by magic on assembling three asymmetrical tetrahedra."