What kind of hobbies or business types are you interested in? E.g. sports, music, graphics, travel, education? Or are you looking for simply any project to improve your skills?
I have not defined any criteria for the project's industry. I only believe it can't be a business without a very relevant web presence (as I am learning to be a web developer), e.g. if it is purely a native mobile app or non-web dev tool.
Aside from that, it is more about having a good mentor than finding a particular type of business.
Aside from that, it is more about having a good mentor than finding a particular type of business.