There is a method I found for getting good closed eye visuals that I've never seen mention of before-simply draw with your eyes closed and watch. Of course you'll get a shitty drawing on the paper, but it reaaaaaallly prompts visual activity... I must ad though it only works if you are in a humorous mood. Its funny because I saw a study recently where some science types showed that people in a humorous mood solve visual puzzles easier-theres definitely a connection there. here's the study
heres some pictures trying to capture things I've seen, I like it cause I see stuff that I wouldn't consciously design...
this first one i saw with lamplight shining through the eyelids- a really cool thing you can do is change the space and the mood of the visuals just by the amount of light shining on the lids, opening them slightly has an effect too. It amazes me how much designs like this have been found the world over, the mandala or sacred lotus type form.
Here's a bizzarre one I've never been able to repeat, words started forming into "giant" walls of text as I (or my point of view) flew through them, then they would break apart and new spaces would form-
another abstract form, it seems lonely in this picture, cause when my brain produced this stuff there were hundreds or thousands of these planetoids. What amazes me is how lighting in the phosphene visuals will be so consistent. Or how real things look, the brain is such an amazing painter from the start, but it takes the human ego years to learn how to put anything like it on canvas. I notice a pattern of formation with these things. Generally it starts with a silhouette and then value patterns form in (which shows light on the form). If you are focused enough you can follow it into a full color, crystal clear visual, but this happens rarely, usually they slip through like trying to grab jello with the fingers.