My grandmother used to make "winter quilts" or what she called "comforters" out of old suits, etc.. so they would be wools and corduroys. She almost always used a postcard for the pattern and cut "bricks" of fabric then laid them out like a brick wall.
she would use a thick bat, then back them with flannel.. these comforters were always tied, and let me tell you, you've never slept under anything warmer.
Good luck with your project.