We had water balloons and a little pool to play in as well. It was mostly for the little kids who couldn't participate in the water fight very effectively, but the bigger kids ended up playing in it too. When everyone ran out of water balloons, they found some buckets and used the hose and pool for filling them up.
We weren't supposed to throw water balloons by the water coolers, but sometimes we forgot- if you're being attacked, you have to act quick!
The sprinkler made sure everyone got wet!
"Who should I target next?"