Answer:
I turn everything around but I cannot move. When you see me you see you!
I can be simple or I can be complex. I can be found in this riddle or in everyday life. I can be shapes or even colors.
I am an instrument you can hear but cannot touch or see. What am I?
I am a seed with three letters in my name. Remove the last two and I still sound the same. What am I?
I am a shimmering field that reaches far. Yet I have no tracks and am crossed without paths.
When is it bad luck to see a black cat?