Whole Foods stores in several cities were mobbed with customers lining up to buy limited edition canvas bags printed with: "I'm not a plastic bag." They're designed by a top fashion designer, Anya Hindmark, whose bags usually sell for more than $1,500. Whole Foods is limiting her bags to three per customer. Hopefully that will limit the hysteria, too. A similar offer at a store in Taiwan last month caused a stampede of shoppers. The riot police were called in, and 30 would-be buyers were hospitalized.