These are the works of Bradley N. Litwin, kinetic sculptor, musician, self-made madman. Here, you will find all kinds of mechanical stuff, ranging from the miniscule to pieces that fill a proscenium stage. And, Brad is the inventor and maker of MechaniCards®, an affordable collection of "mechanundras," designed to be mailed, presented as unusual gifts, or just zoning out, while playing with them, on your coffee table.