Answer:
I spend the day at the window, go to the table for meals, and hide at night. What am I?
They are many and one, they wave and they drum, used to cover a stare, they go with you everywhere.
I am round as an apple, deep as a cup. All the King's horses can't pull me up. What am I?
A caribbean shape that makes ships disappear.
I'm not a bird but I can fly through the sky. I'm not a river but I'm full of water.
No matter how little or how much you use me, you change me every month.