I can sit quietly, eyes closed and look inside: I see a candle burning. I listen to my heart beat. This take my mind off the world and roaming around.
Or also, I can imagine I am sitting in the mouth of a desert cave and watch the moon.
Using my ex-bike or nordic track, I shut my eyes and listen to my breathing.
I live in a very unnatural world. I work in a chemical plant, drive back and forth, and never come out of my apartment while at home. I come out to run in the early morning darkness. Otherwise, I pretty much hate being outside in Missouri.