Retailers who participated in the sixth annual 12 Days of Christmas Sale, which ran Dec. 5-17, 2016, reported that the event drove traffic into their stores. Developed by The Parable Group, these deals were promoted in consumer catalogs, on postcards, in-store signage, and emails. More than 1,200 customers came in two or more times during the 12-day period, averaging $23.16 per visit.