Operators want to build a database of customers as well as know who is in their restaurants, and the bowl for business cards has long been a low-tech way to do that. To draw attention to its take on the custom, Le Coq Rico in New York City goes beyond the basic box for cards with an egg-shaped receptacle. In keeping with the theme of the chicken restaurant, an attached sign says “Let us coddle your contact ... and win a free lunch for two.”