More meta question: I don't feel like this kind of request is typical for HN, but is there some community where it would be typical or more welcomed? Like a "br

More meta question: I don't feel like this kind of request is typical for HN, but is there some community where it would be typical or more welcomed? Like a "brainstorm interesting random project ideas" community of some sort? I feel like I saw a few things like that in an earlier era of blogging (maybe together with the emergence of the "lazyweb" concept) but I'm not sure where the brainstorm/request/seeking collaboration/etc. communities are concentrated nowadays.