I love working with denim in the longest pieces possible. You can leave the long leg pieces and cut them into 2 1/2" strips to make a quilt like a jelly roll race. Curved techniques are also nice in denim if you are interested. Keep in mind that all of your fabric does not have to be denim. The denim quilts are so heavy - I always incorporate other cotton fabrics. There are a few options on my blog if you want to search "denim" there.