Answer:
What has keys but no locks a space but no room and you can enter but can't go in?
You can see me in water, but I never get wet. What am I?
Soft, hairy, from door to door. I am the pet that always stays on the floor. What am I?
The more you add the less it weighs. What is it?
I shrink smaller every time I take a bath.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.