Twice a year the youth group, I am in charge of, needs to plan an activity for all the youths age 12-18. A few weeks ago it was our turn and we implemented an idea I had a few years ago to play battleship in large scale. We put up tarps over the volley-ball net in the Gym. Then we laid out a battleship grid with masking tape. I had built PVC battleships that the kids would carry as they tossed volleys of rubber balls over the net while trying not to get hit. The kids had a great time and I had fun building the ships and playing sound effects like 'You Sunk my Battleship' over the gym's PA system.