A pineapple close and up front next to an apple, a castle city high on the horizon, stars, planets, and clouds even higher.

Abstract things like music notes could appear anywhere sound was coming from, while things like yin yangs would be on other things (hanging on walls)...

There could be a blank slate for perspective inside and perspective outside. I can't think of any other variant, other than space maybe, although maybe there could be a point where you go to sleep and dream. That would be cool - you could sit or lay down, and the program would go on auto pilot, and you could see you're body going around, and items would have loosened relations and maybe some other kind of complex system would come into play, because you really don't just see anything in your dreams. A lot is guided based on reality.