How many pairs of jeans do you own that are too old or don't fit? I know I have quite a few. What to do with those old jeans? Well, there are many options. You can make them into something new or you can donate them to the fantastic organization, Cotton.From Blue to Green. They take your old denim and turn it into insulation for houses built for Habitat for Humanity. Check out a few of my favorite denim rehabs below!