BookWarms is the winter reading program for children and teens. At registration, each participant received a BINGO card. If the child got a BINGO with four squares in a row, they got to choose a prize from the treasure chest. If the child got a blackout and completed all of the squares, they got to choose a free book. I liked this format better than tracking the number of hours or books read. It challenged avid readers to try new genres and gave reluctant readers more chances for success.