Go buy a bunch of Pathfinder Beginner Boxes and give them out to kids at a local youth center.
Go buy a bunch of Pathfinder Beginner Boxes and donate them to the annual toy drive.
Go buy a bunch of Pathfinder Beginner Boxes, hold a CCG tournament (like Yu-gi-oh) and give them out as top prizes to the kids who place 1st through 10th place or something like that.
Go buy a bunch of Pathfinder Beginner Boxes, hold a community event at the local library where parents bring their kids and run short games (2 hours). Get a few friends who can help you to be GMs. Have them buy Pathfinder Beginner Boxes too. After the game is done, give the games to the kids who played the best as prizes or offer to sell the unopened games for $5 - $10 to parents.