I used ministry pamphlets to make origami animals with. Though actually some of the information in them was new to me -- but I didn't grow up in fostering and my family was very poor, so there was a lot we didn't have.

It's not an official rule about the queue in the library, it's just Madam Pince. If I'm with Pansy and there's a big group she'll pretend not to notice though she always does Pansy's books first.

And I've never had any problems with getting my shoes polished. The elves are really good to me, they leave me warm milk when I'm up too late. My shoes still look new, but they were a gift from Harry and that might be the magic on them.