Nannou talks about control of lasers, what would be a way to learn and get a cheap version of a laser beam I could use at home? Or maybe can I use that to contr

Nannou talks about control of lasers, what would be a way to learn and get a cheap version of a laser beam I could use at home? Or maybe can I use that to control some light projections? I'm not interested in a full projector aimed at a while wall but was more wondering if I could somehow project some satellite movement on my living room walls and ceiling. I remember in Amsterdam there are some "immersive" light shows in Micropia where you see bacteria floating around and in the floor. Also shameless plug, I bridged Alacritty with Nannou so that one can use nannou primitives as alacritty "background" with animations https://github.com/sebosp/chartacritty https://github.com/sebosp/chartacritty