The YS letters page contained a section called Doodlebugs. These were like letters, but actually drawings. Essentially they were the letters page's answer to YS Tipshop's maps. Usually they consisted of YS staffer + crap pun, or game-related crap pun.

Destrukto's Monty Python's Flying Marcus, a Marcus Berkmann related doodle.Monty Python's Flying Marcus
Andy O's new bikeRichard Bain drew Andy O's crap bike.
Matthew Curtis scribbled out Lone Wolf (or is it Loan Wolf?)Wolf loaning service
NarkFinally, in black ink only, Richard Challis was Narked.