Jan Brett not only writes and illustrates beautiful children's books, but she has a fabulous website full of activities and printables that go along with her stories.
We found the animals from The Mitten here. I modified this page slightly, by cutting the animals out, spacing them a bit further apart and drawing cutting lines around the images. This allowed my four year old to cut them out independently.
We traced a mitten (put edge of mitten along fold) and cut out. You will need a large piece of white construction paper for this project (18" x 12").
We taped the animals in order along a piece of yarn and attached one end of yarn to the inside fold of the mitten so the animals could climb in.
This was a fun way for my kids to retell the story.