It always astonishes me the variety in pipe shapes, size, materials, etc. The endless creativity and unending originality is probably why people get addicted to buying pipes as much as to smoking them, or to the varieties of tobacco blends. Even within one shape, there is a catalog of textures, color stains, shaping variations, size, etc. When you think you've seen everything, some carver cants (tilts) the bowl just a little, and off we go again.