All advertising and special event materials for advertising agencies, advertising suppliers and advertising clubs must be entered in these categories. Entries submitted in advertising industry self-promotion are not eligible in other categories. However, individual components are eligible for entry in the visual and audio elements of advertising categories. Please note: The NAC recommends that Advertising Industry Self-Promotion work NOT be eligible for Best of Show consideration. Creative Services and Advertising Supplier/Vendor Ads created by, or for, an agency that advances the agency’s or supplier/vendor's cause (new client acquisition, client retention, education, holiday cards, moving announcements, etc.). Includes, but is not limited to:.