Answer:
There is a puzzle which can be asked all day with a different correct answer each time. What is the puzzle?
I fly through the air on small feathered wings, seeking out life and destroying all things.
In the land of the green glass door there are riddles but no answers, sheets but no blankets, and books but no words. Name something found in the land of the green glass door.
I am the outstretched fingers that seize and hold the wind. Wisdom flows from me in other hands. Upon me are sweet dreams dreamt, my merest touch brings laughter.
I am whole but incomplete. I have no eyes, yet I see. You can see, and see right through me. My largest part is one fourth of what I once was.
As round as an apple. As deep as a cup. All the king's horses can't pull it up.