Answer:
I'm full of holes, yet I'm full of water.
What goes around the world and stays in a corner?
We are all around, yet to us you are half blind. Sunlight makes us invisible, and difficult to find
A box without hinges, lock or key, yet golden treasure lies within.
I can be cracked, I can be made. I can be told, I can be played.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.