These pictures are from a while ago. The kids were making me crazy, so I took a leaf out of my childhood and sent them in the backyard with some chalk, a bowlful of ice, and turned the hose on drip.
They were so busy they forgot to fight, whine, and complain.
Obviously they had too much fun!
The key to this is timing. If you are going to do something like this, make sure it's in the late afternoon so the kids are shaded. And more importantly, so your husband is just getting off of work by the time they need to come inside and get cleaned up.