Pool and Beachball
Decorations: Decorate with tons of Beach balls all different sizes. Use them like you would balloons and hang everywhere. Use buckets for the centerpieces filled with sand and stick pinwheel suckers or any lollipops in them.
Food: Circles, Beach ball shaped cookies, sandwiches
Games: Swimming Races/Diving Competitions
Favors: Beach Balls, Squirt Guns, Sunglasses