I do own a fabulous purse made from recycled seat belts:
The company that makes them is Canadian - U.S.E.D. or "Unlimited Supplies from Everyone's Discards". I love my purse. It has a long shoulder strap, is so durable that it still looks new a year later, and has a sturdy buckle (seatbelt buckle, of course!). This company has links to recycle child car seats that expire every few years, and also makes tote bags from shade sail cloth. They also make leashes for pets and other products. The website explains how they source their material, and the philosophy behind the company based in British Columbia (they do ship world-wide!).
To me, this is the kind of product I want to look for and invest in when I'm shopping. I won't be making all of the things I wear and use, but I can look for things that fit with a conscious spending mindset.