Lisa at Nanny Diaries had a wonderful summer bucket list idea of having a water gun fight. So fun and so summer!
We used Evite to invite some friends over for a "Show down at sun down", although we had to reschedule twice! Once for our schedules and once for a huge thunder storm. It was worth the wait.
The kids had a blast filling up their water guns and being allowed to really drench everyone. The only rules were to not aim for anyone's face, if someone asked you to stop to respect them, and not be a wimp and ask that too many times! We had a refill station that was a squirt free zone, so if you needed a break you could hang out there.