Kids can test their aim and douse their opponent at the same time with this water balloon game of throwing and blocking skills.
Fill the buckets to the brim and line them up. Divide into 2 teams (throwers and receivers). The throwers line up several yards away from the buckets and try to toss water balloons into the buckets.
Each successful toss is worth 1 point. Each member of the receiving team sits (or kneels) behind a bucket and holds a plastic bat ready to defend his or her bucket by blocking the incoming water balloons. Be sure the buckets are far enough apart that batters won't hit each other.
Each thrower tosses 2 balloons, the score is tallied, and then the receivers get a chance to be the throwers and earn points. The teams continue to alternate throwing and blocking. The team with the highest score at the end of 3 rounds wins.