Now this brings me to my next suggestion...
I run a forum myself, and quite a few of the members (including me) decided to meet up for a particular event. We started a forum shop, selling T-shirts and caps and such with the forum logo.
Three of us travelled to the appointed venue together and we waited outside, and all the other folks recognised us easily. That was a good meetup
Anyway Mark, how about setting up a forum shop for Murraysworld?
(Actually we have two... many of the members are in the USA, so we have a USA store on cafepress, and a UK one on Spreadshirt