At some point, a cotton button-down wears out its welcome on a hanger. Turn it into cloth napkins or dishcloths, reducing your need for paper products. "The softer and more worn, the better," says Seo. "Faded plaids and check patterns look especially great." How to: 1. Wash the shirts well and cut the fabric into uniformly sized pieces, about 12 inches square. 2. Either leave edges frayed or sew a hem for a cleaner look. Cost: $0