The two guilds I belong to hand out a stamped colored square of the block chosen as the guild logo. Members finish them by quilting them and many put them on a lanyard or some type of ribbons to wear necklace style (instead of pinning to clothing). there is room for adding name by permanent pen, embroidery, etc, as well as decorative stitching, etc. Many attach quilt insignia pins collected from major shows or other quilt guilds. Some simply add their name in pen and pin on their shirt (without any finishing), lol.
Edit to add- One of them also hands out the precut pieces to put a block together then same as above.