_Zeus swirled his ambrosia for a while, contemplating the furious storm he was about to unleash; putting down his chalice on the coaster, he noticed how most fitting its pattern was for the impending bolts soon to be delivered over the heads of mortals far and wide._ This design results from a diffusion-limited aggregation simulation. The simulation models a process whereby particles move randomly around a medium and cluster together to form an aggregate structure. Such fractal structures form in many physical processes, such as dielectric breakdown and crystal growth. The coaster has a diameter of 92 mm.