When running the Scottish Physics Teachers Resource website (sptr.net) I occasionally published some cryptic crosswords for the members to try. They included a lot of physics and astronomy terms and facts, and not a few in-jokes. Only two people to my knowledge ever completed the puzzles, although there may have been more. One is the very clever and erudite John Lovell, for whom I promised to try to make some more: Pixie Puzzle No. 12 was published in May 2018 in response.
The solutions can be found at cullaloe.net/puzzles. Number 2 was a word search, specifically for Sean Duffy.