Me too, kind of.
I have nginx reply with a 418 page to bad bots requests. Funny easter egg. As a bonus, that makes nginx avoid checking the filesystem for inexistent files, and makes filtering logs easier.
Nginx config snippet:
# Nothing to hack around here, I’m just a teapot:
location ~* \.(?:php|aspx?|jsp|dll|sql|bak)$ {
return 418;
}
error_page 418 /418.html;