OK heres what you do to experience closed eye visuals:

Go outside on a cold night, camping or something get a tent.

Smoke like 3 big bowls or as much as you can, until you cant take it any more

Go lay in the tent without any covers, make sure you are shivering.

As you shiver on the ground, stop shivering. You know how you can just stop shivering and u feel warm for a second, and then you get really cold again? Just stop shivering, and dont start again. Close your eyes and you will see spirals as long as you stop shivering.

Dude shivering is so trippy its like i was shaking from one side of the tent to the other but its really just a few mm or smoething. like a seizure. its carzy djafi