Answer:
I have two hands but cannot clap
What is it that you must give before you can keep it.
What can be filled with empty hands?
I tremble at each breath of air, and yet can heaviest burdens bear.
I have many feathers to help me fly. I have a body and head, but I'm not alive. It is your strength which determines how far I go. You can hold me in your hand, but I'm never thrown.
What never gets any wetter no matter how hard it rains?