Extra Yarn by Mac Barnett is one beautiful picture book. It has the potential of winning a Caldecott Medal, thanks to Jon Klassen's beautiful illustrations. The story features young Annabelle who comes across a box containing some yarn. But a magical thing happens! She knits and knits and knits and the yarn never seems to run out. So she knits sweaters for dogs, and people, and trees, and cars, and soon the entire monochromatic town is awash in color thanks to her handiwork. The greedy archduke decides to steal her magic box, which leaves Annabelle in a bit of stitchuation. Will she knit her way out of it?