Well here we are in the dog days of summer. I'll save you a google search and tell you that according to Wikipedia "The dog days or dog days of summer are the hot, sultry days of summer. They were historically the period following the heliacal rising of the star Sirius, which Greek and Roman astrology connected with heat, drought, sudden thunderstorms, lethargy, fever, mad dogs, and bad luck." Hey we are still learning stuff in summer.
But in all seriousness, what is your routine for those summer days as opposed to the normal "school days" of homeschooling? Well for us, we've gone back and forth between having no break, to some school, to we don't need no stinking break. After all we are preparing our kids for the real world right? Ok I'll get off my idealistic, self-rigtheous soap box.
What I have found is that although we may not be formally having "school", a routine is key. When the mood of the house is that free time reigns, I find the kids are fighting more, begging to watch tv, like constantly, and I am losing my mind in the meantime. So although your calendar might be blank, during those months of summer, creating a schedule for each day may help keep order in the house. Even if it is scheduling the non-school stuff and putting it somewhere where everyone can see it, may be the key to keeping your sanity. What are we doing today, you ask.... go check the calendar and see for yourself. Also scheduling free time that doesn't involve electronics and only engaging me if you are bleeding or seriously injured is important.