Unlisted posts and/or pages

Maybe I’ve missed something, but I don’t see a way to make unlisted posts and/or pages. I would like to eventually use a blog as a full site, but the main issue is that I can’t, for example, make an “Art” post and then keep it from showing up in the list of posts. If someone scrolls back far enough, they’ll find it. If I add a new “page” later, it’ll show up as part of the feed. That’s not ideal.