Zazzle, Chicago

The key to Zazzle's success isn’t a 3,000-strong stock of T-shirts, phone cases, and accessories—it’s the fact that customers can express themselves on products before they're printed and shipped. The website’s user-friendly design interface allows customers to affix their favorite pictures to messenger bags, scrawl personalized messages on coffee mugs, or customize family portraits. Zazzle also showcases designs from creatives around the globe and big names such as Disney, Marvel, and The Who. Each product is made to order and bears a 100% satisfaction guarantee.