I was not expecting much, but it turned out to be a good book, even if the characters kept ignoring the simple solution for the sake of moral dilemmas, and the shaggy dog story + deus ex machina ending. And I love that Cassie's signature move is (view spoiler)[dropping a whale on you 
 (hide spoiler)]. 
 That said, that blue box has SERIOUS design flaws. And can't you guys cover it in a cloth? Make a bag out of a tee?