Re: short summer courses
Lovely depends on what do you like and what are you subjects?
Go for some language classes, or computer courses,
or learn some art , like knitting , stitching, embroidery, cooking, baking etc.
You can give tuitions to kids too. Teaching is my personal fav profession.
Are you interested in CSS or PCS exams? If yes buy books and start reading them, or join some academy for it.
How about looking into B.Ed course? Thats again if you are interested in teaching profession.
Go for some islamic course, like Understanding Quran and Hadith etc. Update your knowledge about your religion.