The only people to see the Threstrals were Harry, Neville, and a nameless Slytherin... Book five spoilers.
"To the well organized mind..." Nicolas Flamel has a chat with Dumbledore. Set at the end of SS.
It's never easy being Ron. Takes place in sixth year. Features OotP spoilers and a distinct lack of fluff.
During her first public appearance since her downfall as an Auror nearly a year ago, Hermione runs into an old enemy. Short, unromantic, and utterly Hermione.