In the past decade, more than 500,000 kids have hit the country’s fields and courts with donated uniforms, shoes, balls and other equipment, thanks to Good Sports, a Massachusetts-based nonprofit dedicated to partnering with manufacturers to provide youth with sporting goods. Now, the organization is celebrating the donation of $8.8 million in sports and fitness equipment over 10 years, as well as more than a half-million kids outfitted for physical activity.