The Wall and the Wing by Laura Ruby

Great new fantasy where everyone can fly. Well almost everyone, except Gurl. But wait, even cooler, she is the only one in the world who can become invisible. Grades 4 and up.

Diary of a Killer Cat by Anne Fine
First it's a bird, then it's a mouse and then it's the neighbor's pet rabbit. Things go from bad to worse for this poor cat who only does what comes naturally. Grade 2 and 3 or read it aloud to younger kids.

The Case of the Missing Marquess by Nancy Springer
Enola Holmes' mother has vanished so she calls her two older brothers, Mycroft and Sherlock for help. But they think help is turning her into a proper lady and sending her off to boarding school. Her feminist-thinking mother would be appalled. So Enola does the only thing she can do, runs away from home and solves her own problems. (Grades 4 - 6)