Welcome to Club Mahj! Mahjong is trending and we love that this insert set can help complete your store’s mahjong story. The set will take you from serving margs while you and your friends play all the way to wishing you a Very Merry Mahj with the Christmas insert. Dot! Crack! Bam! Acrylic trays are all the rage and are definitely on trend. Why should customers settle for one design when they can have TEN designs and change them out on a whim?