Send Them To: Sports Gift (SportsGift.org; 949-388-2359), a nonprofit that redistributes gear to more than 40,000 underprivileged children worldwide each year.
You'll Be Helping: Promote youth programs that feature team sports. Sports Gift also accepts larger donations from schools or professional organizations of team uniforms and coaching equipment like stopwatches and whistles. Ship gear to the main California office.
If You're Getting Rid Of: Tennis balls, tennis balls, and more tennis balls...
Send Them To: Rebounces (Rebounces.com; 888-630-5696), a company that restores the balls' bounce, then sells them at a deep discount for use as practice balls.
You'll Be Helping: Landfills, which accumulate 20,000 tons of used tennis balls each year. If you send in 250 balls at a time, Rebounces pays for shipping. (Smaller batches also accepted.) Balls beyond repair are donated to schools and hospitals, where they're cut up and affixed to the feet of chairs and desks to prevent screeching.
If You're Getting Rid Of: Orthotics that helped you come back from an injury: crutches, ankle splints, canes, wheelchairs, and knee braces...
Send Them To: Rebounces Philanthropic organizations Joni and Friends (JoniandFriends.org; 818-707-5664) and Christian Blind Mission (CBMUS.org; 800-937-2264).
You'll Be Helping: Disabled adults and children in the developing world (more than 100 countries are covered through their efforts); these groups use your donations to assist with disabilities such as clubfoot and war injuries. Joni's network of 1,200 volunteers nationwide will pick up products from church drop-off sites; contact CBM to learn where to send donations.