Free Coke Zero 1.25L @ CVS ACCoke Zero are $0.99 for 1.25L at CVS until 5/19. Theres a $0.99 coupon (2 max per PC) by playing some lame game:

Log into your Coke Rewards account, play the game (level 1.1), surrender mission (by hitting the pause button so you don't have to play) and get the e-mail for the coupon.

you can print the coupon twice.