Need a long summertime activity?

I'm 15, and this summer, literally every one of my friends is going to be out of town for at least 5 weeks, so I'm going to have a lot of free time without any of them. I have some camps and trips myself, but I'm still going to be bored at home for weeks on end.

However, I don't want that to happen. I want to start something. Problem is, I'm not sure what. Perhaps I could write a book, build something (although I have no experience with woodwork or mechanics), start an organization, or basically just do something that will be enjoyable to other people as well as myself. I want to try and do something that will bring other people joy in some way, or at least make them think.

My hobbies include politics, public speaking, hockey, debate, and sleeping (although I'm not sure if that could be helpful).

I would love to start some sort of video channel (I have a camera), some sort of organization for like-minded people, although I'm not sure how many people would take a 15 year-old like myself seriously. I have lots of motivation, and I just want to do something to pass the summer days and perhaps make some other people laugh.

I appreciate any and all suggestions, and I hope I can find a great goal to work towards!