The unique, wind-powered Bubble Mill is one of my proudest inventions. Tripod-mounted two metres above the ground, even the gentlest breeze is enough to generate a constant stream of crowd-attracting bubbles.
On a windy day, the quantity of bubbles has to be seen to be believed! All day long, it fills a huge area with a swirling bubble-blizzard that continues hundreds of metres downwind.
In sunshine, the spinning CD wind-vanes flash in dazzling prismatic colours as they drive the mechanism.