This is great to do no matter your age. Head on out with your buddies and play a sport, throw a Frisbee or take your kids to the playground. The park is a great place to have free fun.
You can organize a touch football game with the Football Gate. You might even meet more friends that way if people ask to join you.
If you have kids, getting together with friends to take them to the park and play a football game, it can make the whole experience more fun for everyone. Bring some food and turn it into a picnic. You can catch up with your friends while your kids play.