https://cookie.engineer
Built my website as a fun project over the holidays and experimented a little with fun to use UI/UX elements while trying to preserve as much backwards compatibility as possible.
Copy/paste uses markdown, which is used to generate the static site, print stylesheets, responsive layout, an interactive avatar, a crypto scavenger hunt, konami code, zerg rush, and works without javascript or even in old browsers like links/lynx. CV uses web crypto api to preserve secrecy etc.
Wanted to maybe build a little OWASP CTF for it at some point, too...