Thirty five years ago I had yet to be born, but artist Scott Weaver had already begun work on this insanely complex kinetic sculpture, Rolling through the Bay, that he continues to modify and expand even today. The elaborate sculpture is comprised of multiple “tours” that move pingpong balls through neighborhoods, historical locations, and iconic symbols of San Francisco, all recreated with a little glue, some toothpicks, and an incredible amount of ingenuity. He admits that there are several toothpick sculptures even larger than his, but none has the unique kinetic components he’s constructed. Via his website, Weaver estimates he’s spent over 3,000 hours on the project, and the toothpicks have been sourced from around the world. So far he has used approximately 100,000 toothpicks.