I am the only child of my parents. People have always asked me "How do you stay all alone at house without any siblings??" Well I don't know the answer, I am just used to it. I always knew that I have no one to play with so I invented ways to kill time and play all alone. It is not that difficult actually.
If you have a table tennis ball then you are done buddy. Just use you hand or a small text book as a bat and play squash!! I am sure many kids do it. It is not at all boring thing to do. I used to play all alone for hours and sweat profusely without worrying about anything else in life. Sometimes I just miss these simple things I used to do when I was kid. I still do such things till now. Part of me is still a child and not grown up. Well It is ok not to grow. I mean what the hell, why should we behave and act like mature people when at heart we love doing silly things and loving them. Like making strange noises, mimicking animal voices are my all time favorite stress busters :) really!