The guild that I belong to is about 25 yrs old and has many of the same functions that the others have mentioned. Our annual "stash buster" is called the "Ugly Auction". Members can sell anything quilt related (patterns, tools, unwanted fabric, UFOs, blocks not wanted, scrap bags, etc). The member decides if they want all of the proceeds or to share 10% with the guild. We, too, have a 4-day retreat with national and local teachers. We have monthly meeting programs, monthly workshops, and special education programs a couple of times a year with national teachers that are funded by educational grants from the annual QuiltFest show. We make quilts for charity and Quilts of Valor. WE also have an annual birthday covered dish party. We have many out-of-town members because they can attend the annual retreat at a reduced fee. We also earn points toward reduced fees at workshops by monthly attendance, show-and-tell, providing refreshments, being a committee chair, and workshop attendance. We have about 80 members.
(QuiltFest is put on by the 7 guilds in our city.)