This is simple. When your shoes wear out you can create something stunning, like this dress or ball pendant (who has the time or talent), donate them to charity (my boys destroy shoes so this won't work), or you can recycle them with Nike Reuse a Shoe program. Nike grins the shoes and creates sports flooring. Now that is easy, just toss the old shoes in your bag when you head out to the mall and drop them into the bin at any Nike store. But I do kind of like that dress!