A Tempe, Ariz.-based small business known as Precision Corporate Staging has been recognized by the U.S. Chamber of Commerce for its charitable work. The company's donations have totaled $2.5 million worth of time, equipment and cash since it opened. "We like to give back to kids' programs," said Dave Stern, who co-owns the business with Marla Stern. "It's our way of helping kids. If you can change one kid's life you can change the world."