I remember a template for technical design documents that had a placeholder to insert a header image. Any image, could be totally unrelated to the document content. The template explains that it's a sort of mnemonic to identify the document, since everyone is expected to use the same template, and all walls of text roughly look similar to each other from a distance.

So with some header image, reader might be able to recall "it's that Clice post with Yami on top" or "it's that other Clice post with Kessoku Band".