Answer:
I am nothing but holes tied to holes, yet am strong as iron.
A red drum which sounds without being touched, and grows silent, when it is touched.
What has two legs but doesn't walk?
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
My life can be measured in hours. I serve by being devoured. Thin, I am quick. Fat, I am slow. Wind is my foe.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.