When initially setting up gatsby-source-drupal for this site I started thinking about how I could adjust my GraphQL query to only include published posts. I eventually realized that the plugin was already doing that by default. That isn't always the case for stuff like this, so it was a nice time saver.
I also found that gatsby-source-drupal seems to work best with Contenta for some reason. More on that soon - I'm hoping to have a longer post on Drupal and Gatsby at some point.