When I grow up, I really want to be a game dev, as I have some experience with programming from academies and schools. Here is the idea:
To develop a game with roleplaying element, yet has survival and looting. The survival won't be as easy as a snap of your fingers. It could take a few days. It would have the survival of the real world. The world would be an abandoned city and countryside with no AI beings. It would be MMO where you can create a town or even a large city with your friends. The looting will be just like the looting in Fallout 3 or Skryim.
If you like this idea or want to hear more, respond in the comments.
If you would like to share another idea of yours for an upcoming or a game of your dreams, post here.