This has been one of the greatest yet super on the down low hack. Costco wants you to buy those new cartridges so you have to know they do it to get it done. Ain't no big signs at my Costco announcing this service.
printable calendar (she had printed at Costco) . Template available through Paislee Press here: http://www.the-lilypad.com/store/product.php?productid=31031=0=1 (http://elizabethkartchner.com/2012/10/22/poster-calendar/)