Weirdly, with a bare-bones Wordpress install with barely any traffic, I still spend about $5 every month or two. Not sure what's going on there.

For blogs, I've found that Github Pages offers one of the best deals in the industry. It's free and it allows you to use your own domain; all you have to do is provide static HTML, or alternatively a bare-bones Jekyll site. With a few simple files, it's possible to have a custom domain and 404 error pages. Because it uses git, you automatically get a complete historic archive of your site without having to resort to archive.org. For once, without paying any extra money, you can have your own custom content and not have to manage any server stuff. Just write and publish.