Some more organized activities include beach volleyball.  If you can assemble a team from your own friends and family I would suggest visiting the public beach at the end of Manatee Avenue or route 64.  The Manatee public beach normally has (2) volleyball courts up at all times.  Sometimes you can pick up a game along the beach and your chances are a little better at the Anna Maria City beach just off the Sandbar restaurant or the Bradenton Beach just off the Beach House restaurant.