My guild also has a potluck and everyone brings a bag with a couple of fat quarters or a similar quilt-related gift for a game of the Wright family (the one where you had the gift left when the reader says left and right when...(I rewrote it a few years ago so it's about how Mrs. Wright got into quilting and makes all her gifts.) We always have a fabulous Show and Tell at the Christmas party, plus we bring stockings or something related for a community service project.