The way I see it, there should be room for small neat articles, even if they are not announcements of billion dollar projects. I know HN has changed over the years, and it probably used to have more of this stuff. But I don't think there is anything explicitly forbidding it. If users like it, it gets to the front page, maybe just for a couple of hours on a slow Sunday.
So in summary, I don't think anybody should stop posting things because they are "not front page stuff". Does this line or argumentation make sense to you or do you think I am missing something?