Need some ideas to help draw customers in the salon

ok i work for petco in the grooming salon and i need some ideas for drawing people in, more so baths then really grooming, we have a special that is only for sundays and mondays and i've sent out postcards and cupons to all our cutomers, but im looking for something like a catchy sign or drawing or something to get people to come in! any ideas would be great thanks!