Ask HN: What do you do when you can't take on a dev project?

I (and a lot of my dev/engineering manager friends) will often get approached with project ideas from people who ask us to "build this thing for me". Most of the time the projects are small enough for us to build ourselves, but for larger projects - which would actually benefit us the most financially - we generally can't take the work on ourselves given we have full time engineering jobs.

I'm curious to understand if other people have this problem and how they deal with it. Do you refer projects out to people who have time? If so, how do you make sure it goes to the right person?

I'm trying to build a tool to help myself and other people out with this problem, so any thoughts would be helpful.