The gun forum I frequent has one of these going around and its tons of fun. I've gotten it twice over the course of a couple years and had a huge laugh both times. The way we did it was to have a rolling list of who's in and as people want to get it they add their name to the bottom of the list and repost it as they're interested. When they get it and send it back out they remove themselves from the top of the list. We've used a large flat rate box and even that was always a huge game of 3D tetris to get everything to fit
Any time the box got too beat up it was replaced with a fresh box. Each person was responsible for getting their address to the person before them. People who didn't get their info out in time were skipped but could cut back in later in line. After you got the box you could add yourself back in at the bottom of the list if you wanted.
Assuming everyone who posted wants in the current list is:
Autonoz
4Gsr
JpFabricator
Brosephus
SuKi
TerryWerm
Andy Rafferty
Brino
Kingmt01
Roadkillbobb
KVT
Ogberi
Bill Gruby
ChurchJW
John Hasler
George Wilson
Edit: PrecisionMarine goes here because I took too long writing my reply
TIGL
Really hope this happens it's always a blast