image via Nervous System’s blog

I own several pieces of jewelry by Nervous System, a pair of designers who “create… experimental jewelry, combining nontraditional materials like silicone rubber and stainless steel with rapid prototyping methods. We find inspiration in complex patterns generated by computation and nature.” The beautiful patterning on their Reaction Vase, above, was apparently generated by reaction diffusion, and it was made exclusively with open-source software, including Processing and Meshlab. It was created for the Shapeways SIGGRAPH competition.