Cool the kids off with a homemade sprinkler. Take a 2 liter soda bottle, poke holes in it. Attach to a garden hose via a male to male adapter that cost less than $5 at Lowes. Toss over a tree branch and let hang. You can adjust how the water sprinkles by adjusting the water flow. When the bottle gets worn, just switch it out.
For anyone that may not know, the BEST way to make hard-boiled eggs is in the OVEN! Place the eggs in a muffin tray so they do not move around, turn the oven to 325 degrees, pop in for about 25-30 minutes and remove! Not only are they tastier, but they also are much easier to peel! Must try this.