I completed some graduate work one summer, and I missed that time off. I realize that you may not have a choice but to complete course work or make money teaching summer courses -- try to plan time for yourself w/o school in mind. As someone once said to me when I was worrying about the plans for my classes, "Your students aren't thinking about you!"
It is as important to have this down time -- you'll be back on the treadmill soon enough!
In direct opposition to what I just said, check out my lab book "Chemistry on a Budget" at amazon.com -- it's only $20! It will take a little time to get to you, so order it and enjoy your summer vacation!
Each lab is presented with two possible report formats -- both labs use the same procedure but each has a different conclusion -- one with 10 questions to be answered as a conclusion, the other with a full laboratory report required. This gives the teacher the option of what type of report is desired, and each version is designed to be just two pages. This way the teacher can photocopy just one 2-sided page per student (saves paper).
Have a good week!