Best - sort of - I ever managed was my "I Learnt About Flying from That" being published in Air Clues - and subsequently in the collected book!
Got £20 or £25 for that too - which was a lot of money in those days.... (I of FS at the time said the money was designed "as about the price of a barrel" which tells you how long ago it was! Wouldn't buy a round for that these days......
)
Oh - and an MiD when I was young and foolish!