According to its Wikipedia article, closed-eyed hallucinations are actually a thing, and are not too uncommon, especially in the dark or on the brink of sleep.

Ever since I was little little, I entertained myself with closed eyed hallucinations, made them happen, without even knowing really what they are. I still do, and they are extremely vivid, especially when put to music, and I find that they come really easy to me now. It doesn't have to be dark for me to get to stage 3 or higher, and I always have visual snow/floaters. I wonder if this is because I've been doing it for so long or if its because of some other damage I've done to my eyes (I also stare into bright lights because of how beautiful it is, even though I probably shouldn't.) These things are probably the closest thing to doing psychedelics (which I swear I've never done) without the drugs.

Questions: does anyone else entertain these hallucinations, or know any more information about them?