Hallmark, 377 S McDowell Blvd, Petaluma, CA 94954, US

In 1975 graphic designer Andrea Grossman launched her sticker business in her home. She originally created 10 sticker designs and introduced "Sticker by the Yard" at a trade show. Soon she became swamped with orders. Within three years her stickers had become one of the hottest-selling products in the country. Andrea then found herself featured in "People Magazine" as the person who started stickermania. Today, Andrea still runs Mrs. Grossman's Sticker Factory, overseeing her 90-employee corporation. Her sticker factory is the only one in the world that conducts factory tours.