20 FREE 5×7 Custom Flat Photo Cards Walgreens! 3 years ago 1 Comment Free Photo Gifts, Free Stuff Have you bought your Christmas Cards yet? Right now Walgreens is offering 20 free 5×7 flat cards for those that “like” their Facebook page! Head on over now to get your unique code! Prev Article Next Article Dee Hi, I received the code for the free cards from Walgreens’ FB page, but when I tried to use it, it doesn’t work. I ordered one set of 5X7 flat cards ($16.99). Did this offer work for anyone?