I love this idea! Denim weaving I can imagine how great this would look with other things (not just a purse) such as a quilt or a jacket back maybe even a chair cover O the possibilities are working in my head now.
Turn the legs of your old jeans into fabric baskets. This tutorial gives measurements for making 3 different sizes of baskets. This is quite clever. They would look quite nice on a dresser for loose stuff.
Hooded Jacket, Upcycled Clothing by EcoClo, Denim Collection, size M