Princess Lablemaker to the Rescue, by Tom Angleberger

This book was awesome!  It is about how Principal Babbski destroys funtime (explained in "The Surprise Attack of Jabba the Puppet").  Principal Babbski gets annoyed at Funtime and mysteriously receives an origami fingerpuppet named Princess Labelmaker.  They join the rebel alliance.

I liked this book because it is funny.

Two other books I would recommend are:

Darth Paper Strikes Back AND The Secret of Fortune Wookie