I did something similar. On a normal browser it just displays the matrix rain effect. For a bot, it's a page of links on links to pages that link to each other using a clever php script and .htaccess fun. The fun part is watching the logs to see how long they get stuck for. As each link is unique and can build a tree structure several GB deep on my server.

I did this once before with an ssh honey pot on my Mesos cluster in 2017.