Comment by pradmatic

Tacking on to this: find other people in the same boat (surely there are others from your class or adjacent years). Talk to each other about problems you see in the world. Talk about how you could solve those. Even if you don't raise VC or anything like that, simply working with other people to ship some working product is extremely valuable experience. Even better if you can find others to work with that have different backgrounds (e.g. design) to get that cross functional experience.