Ok, so on this Dave Arneson's death day, I got an idea on what to do for Gary Gygax's Birthday.
(By the time it comes around--July 27--we'll have had time to decide whether we want to do it or not.)(I'm not committing to this idea until I'm sure a lot of people are into it.)
S0 here's the deal-we call it the Secret Arneson Party.
Basically, at the beginning of July, everybody who wants to participate e-mails some central someone (me, if nobody else wants to do it) a request for some specific brand new campaign material--a new race, a location, a one-shot adventure outline, a random table, whatever. The idea is to be as specific as you need to be, but not too greedy (ask for a page or two of material).
Then the person running the Secret Arneson mixes all the campaign stuff requests up and e-mails them randomly back out to the people who entered. (Like a secret santa.)
Everybody gets the requests, and then they have until Gary's birthday to write up something matching the request. Then you post the material on-line or just send it back to the person who asked for that thing in the first place.
(It probaby goes without saying that none of this stuff should get used commercially unless the person who wrote it gets paid. Let's not celebrate the Gygax/Arneson relationship too controversially.)