Chex is teaming up with John Legend and Chrissy Teigen to make your holiday season even merrier. Unlock 12 days of Chexmas surprises by scanning the QR code on the back of Chex boxes. Each time you scan a code, you are entered into a sweepstakes to win holiday gifts brought to you by John and Chrissy. The sweepstakes end 12/31/21.