Mine was Tubalr. www.tubalr.com In my opinion, think of something you would find useful and just go for it. Maybe think of ways you could make certain apps bet

Mine was Tubalr. www.tubalr.com In my opinion, think of something you would find useful and just go for it. Maybe think of ways you could make certain apps better if you where on their dev team... once you have something in mind, check to see if they have an API and see if you can build it out. Good Luck