Answer:
I turn everything around but I cannot move. When you see me you see you!
What goes up and down, but does not move?
I can be entertaining until you realize some pieces have been lost.
I have a foot but no leg. What am I?
In all the world none can compare I am a tiny weaver my deadly cloth so silky and fair.
No matter how little or how much you use me, you change me every month.