I agree with the plain text piece, I also write plenty of notes in plain text or Markdown, organized in folders. For images and memes, I use descriptive filenames of one or two words. This works so well that I often notice I already saved the same image with the same name in the same folder.
I think you could use a Python script to post a text file directly to your blog, but it will take some effort to set it up using beem and an api node.
yes, "some effort" is often the bit that defeats me :)