I was working on an idea a few months ago called Gotaprob, it was a list of problems that need to be solved. I found this approach interesting cause I would either research pain point or have people suggest problems they were already dealing with. I attached a link of some of the problems I collected if anyone is interested in taking a look https://docs.google.com/document/d/1lCt8dFzuNrE7zAFovjidLmvXj0vzizi0SO1wZN3Pvuo/edit?usp=sharing