We got out sprinkler out and started the water wasting already this summer. We've had a few 100 degree plus days here already. My kids go stir crazy on the weekends if we don't have to get out of the house for errands, so I just turned on the water one day and let them at it for a while. I think they lasted over an hour. Water is so fun! Especially when it gets drunk right out of the patio.
Zenock made a dam with a big rock so his cars could go swimming.