Photography by: Courtesy of Winter Water Factory Stefanie Lynen and Todd Warnock — shown here in their Brooklyn studio — credit social media for helping grow their business. Lynen focuses on design, while her husband handles day -to-day operations, sales, and marketing. Stefanie Lynen got bitten early by the entrepreneurial bug. As a girl in Germany, she started a "company" with her sister, selling bottles of melted snow gathered from their backyard. They called it " Winter Water Factory ." The business was short-lived (even their parents wouldn't buy the water), but her creative energy was just beginning to flow. Lynen soon learned that she loved to make beautiful things with her hands, from paper chains to knit hats — and she'd easily get carried away. "I could never make just one," she says. About a decade ago, a friend showed Lynen , who started as a freelancer and is now the design director for Martha Stewart Crafts , how to silk-screen,...