While at the Phoenix Foundation gig we had to make a trip away from our rather good spot (parents of small children will understand why we had to do this, and quick). On our little trip we happened to walk past the Water Whirler, which somehow Becky and I had never seen working before.
So I snapped it with the cameraphone, and I think it came out better than it might have with a real camera, the low-light noise making like Seurat:
The clouds in particular do it for me. But if you want to get a better idea of the nominal subject, there’s lots more photos of the Water Whirler here.