Answer:
I am a cave full of bones and the house of a worm.
I have memories, but none of my own. Whatever's on my inside is what is shown. If I'm ever different, it's because you changed me. I feel like a decoration, here for you to arrange me. What am I?
Send poorly behaved children to me and let them sit here. What am I?
I can generate fear and some say I come out of your ears. I am as quiet as a mouse but not welcomed in the house.
I mirror your actions.
A leathery snake, with a stinging bite. I'll stay coiled up, unless I must fight.