Answer:
I shrink smaller every time I take a bath.
I have 24 keys but cannot open any locks. Sometimes loud sometimes soft
I am a candy that looks like a shepherdβs staff.
I have a little house in which I live all alone. My house has no doors or windows and if I want to go out I must break through the wall.
Of these things - I have two. One for me - and one for you. And when you ask about the price I simply smile and nod twice.
What is yours but only used by others?