Answer:
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
If you drop me I'm sure to crack. But give me a smile and I'll always smile back.
What do you throw out to use and take in when you're done?
It's in your hand though you can not feel it. Only you and time can reveal it.
They have not flesh, nor feathers, nor scales, nor bone. Yet they have fingers and thumbs of their own.
I can only be played on a windy day