For my daughters 7th birthday we had an water theme party. For games we placed plastic ducks in rows of two and had two teams. On "go" the girls threw small water balloons at the ducks, that were placed on top of gallon milk jugs filled with water. Everyone got a turn to see how many ducks they could knock down in a set amount of time. After this the girls got to play a game of regular carnival balloon darts. We had one adult supervise as the girls threw darts at confetti filled balloons. We also had water balloon bowling, with large balloons being rolled at empty cans, but be careful-don't break the balloon ball! Before the gifts were opened, each guest received a piece of paper to write down their guess as to how many gummi fish were in the jar-winner to home the large one, and the other each got a small bag of the same fish just for trying.