Answer:
What has no hands but might knock on your door, and if it does you better open up?
Spies and detectives do this to phones and musical shoes make this sound.
You can have it, and be at it, But it never lasts forever.
I am the yellow hem of the sea's blue skirt.
What 2 things can you never eat for breakfast?
I am a room that has a roof but no walls. What am I?