Here is a link with 50 alternatives to a standard book report:
One has just finished reading The Trumpet of the Swan (which she LOVED, by the way). And, as an alternative to a book report, I had her write an acrostic of the main character's name (an adaptation of an idea I got from the above link). If you're looking to change things up, you may want to check it out.
And, here is One's finished product:
Louis is dumb.
One hundred dollars was the first money he earned.
In Philadelphia, he played at a nightclub.
Under a bush was where Louis kept his things.
Serena was the most beautiful swan Louis knew.