Just realized today is Friday the 13th.
Days like this are perfect opportunities to contact your customers. Hold a "bad luck" sale of damanged merchandise or something...
Don't have anything to sell right now? Don't worry; there is a holiday about every week. If you don't have one that works for you, there you can make something up. National Left-Handed Factory Worker's Awareness Week, perhaps?
Have fun with it.
Feel free to list your ideas in the comments section...