I built willpayforthis dot com because I always struggle to know what to work on. It felt dumb to me at first but I thought "Why not collect a bunch of posts from social media where people say 'I'd pay for x'".
I did it and there are great ideas from users with pain points that say they'll pay for solutions.
I'm sharing here in case anyone is interested. Let me know if you have any thoughts!
Discussion on your recent submission (16 points, 37 days ago, 14 comments) https://news.ycombinator.com/item?id=42671589