Andy Smith/”slurry bowl” shared some more projection overlap effects from his The Portal Lagoon (T.P.L.) on the Adafruit Forums. (We shared some photos previously as well.) He is using bright NeoPixel rings and what appears to be laser cut or milled plywood patterns as lighting gobos to create complex multi-colored projections that transform as he overlaps and interpenetrates the results of each. We look forward to seeing more!
here is a photo of T.P.L (The Portal Lagoon)