Answer:
What can you hold in your left hand but not in your right hand?
What has many keys but cannot open a single lock or door?
What is something you can give away as many times you want without ever losing it?
Casper was a friendly one and Demi Moore made a clay pot with one.
What has a head and a tail but no body?
Two little holes in the side of a hill. Just as you come to the cherry-red mill.