well I've seen smatterings of things. Usually, the levitation energies kick in at about the same time as I'm seeing stuff and make me feel like I'm falling to the ground, so I can't hold it long.
time tunnels, geometric shapes, the white cave, and the dots are things I've often glimpsed... the dots are actually easy at night in a darkish room, somewhat harder to bring to life during the day in a lighter room
I also liked the green splotches once a long time ago when I was looking at a tree on a cold, dark night. Man that was forever ago!