My Coke Rewards continues to offer a $20 Shutterfly Holiday Cards Credit for five points. (You will be emailed a redemption code that cuts $20 off card orders of $20 or more at Shutterfly.) That's tied with last week's mention as the best holiday card offer we've seen from My Coke Rewards this year. Shipping at Shutterfly starts at $5.99. Deal ends December 27.