I wear either a lavalier, a charm on a bracelet, or my Quill every day with my suits and dressy clothes to work. On some days, when jeans or other extremely casual clothing is allowed (say for cleaning the office or a workshop) I will wear a polo shirt with letters or Alpha Xi Delta embroidered on the upper left pocket area.
In addition, my tote has letters on it, as well as my lunch box, which I got at Convention.
Figure out what way is appropriate for your work environment, and WEAR THEM.
