Get lots of sinking toys, and throw them into the pool. Split the kids in 2 teams and 1 person goes from each team and tries to get as many toys from the bottom of the pool as they can, IN ONE BREATH.
The person who gets the least pool toys stands off to the side and then the winner gets back in line and the next 2 people go. You continue this until everyone goes and the team who still has people on their team, wins!
The team that all its people have lost and there are no more people on the team, loses and they have to let the other team push them into the pool.
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