Answer:
I can be repeated but rarely in the same way. I can't be changed but can be rewritten. I can be passed down, but should not be forgotten. What am I?
Where do fish keep their money?
I have three eyes and only one leg. Obey me or you will be sorry.
I have a strong affection for belly buttons.
I wiggle and cannot see; sometimes underground and sometimes on a tree. I really don't want to be on a hook and I become a person when combined with “book”.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.