RETAIL: The toy industry is changing as more people are asking for environment-friendly products. Laurie Hyman had a busy time in the New York Toy Show, the US industry's biggest annual event, with more than 1,200 exhibitors. Her start-up company, Green Toys, sells toy teacups, bowls and gardening tools that are made in California from recycled plastic milk containers, and sold in boxes made from recycled cardboard. "We're getting a lot of interest