The Stash-Buster Quilts book by Lynne Edwards has a cute pattern for a sheep quilt that finishes at 40 by 40 inches. The pattern is called Sheep in the Meadow.
Not sure if I can take a photo of it without a copyright violation so I won't but you might want to see if the book is available in your local library. Or use it as an excuse to add to your quilting library :-)