The Strange Case of Origami Yoda (Amulet Books, 2010) by Tom Angleberger is one cute middle grade graphic novel.
6th grader Tommy is trying to figure out if the finger puppet is real or, as his friend Harvey says, just "a paperwad." But Dwight isn't smart enough to say all the things Origami Yoda says, is he? Tommy has each person write up their Origami Yoda experience and then both Harvey and he comment. Book ends with Tommy and his conclusions, oh, and directions to make your own Origami Yoda.
The next book, Darth Paper Strikes Back, has recently come out. Don't you love the title? I need to get my hands on that one.
Check out Tom's alter ego at Berger and Burger.