A participant in a particular beta site is about to be the first to reach a major reputation milestone. This participant is truly beloved on that site. (The participant is not a moderator on the site.) I'd like to do something really big to mark the occasion and celebrate. Is this possible, for example by writing a guest post on an SE blog?
How about something like
but here on Meta?
Update: Well, he got there before I could figure out something grander, so I had to settle on using our local Meta to celebrate Spanish Language Beta's first 50K superhero, with a list of our chillin' champion Charlie's Greatest Hits. It's a milestone for Charlie but also for Spanish Language Beta!