When I was a little kid we didn't have a kiddy pool nor did we have an outdoor hose connection, hence no sprinkler to dash through. Instead, Mama would fill two dishpans with cold water (there were four of us siblings) and we would set them a distance apart and have races, splashing through the pans of water until they were nearly empty. We had squirt gun fights, too, and would sometimes have balloons left over from birthday parties that we'd fill and toss at one another. Mostly when it was this hot (yesterday and today have been the typical July hot/hazy/humid days with temperatures in the high 80s), we found someplace  shady to spread a blanket where we'd read or play board games or even drift off to sleep.

Yesterday my daughter C blew up the little plastic whale-shaped pool she'd purchased for the Bean to cool off in. She filled it with lukewarm water and plunked the baby in it. Then C and I plunked our bare feet in, too. The Bean thought our toes were extra toys. Heaven can't be any better than cooling one's hot feet in cool water while playing with a baby!