I want to paint one of my walls in my basement with glow paint so that I can draw on it with a laser. I saw something similar to this when I was at Electric Forest Festival. So I researched a bit and I realize that some wavelengths work better. I'm looking at violet lasers to buy. I believe it was 405nm? Anyways I'm not sure what power I should get get. They range from 5mw-50000mw and I don't know what's best for me. I want a powerful laser that lights the glow paint up and but I also don't want something that will burn my eyes out. Can anyone point me in the right direction?