Very amusing: PhishyURL.com. “This is a tool that takes any link and makes it look malicious. It works on the idea of a redirect. Much like https://tinyurl.com/ for example. Where tinyurl makes an url shorter, this site makes it look malicious.” It does generate very crazy-looking URLs.
https://rbfirehose.com/2025/10/08/nerd-pranks-phishyurl-com/