Wrendale Designs Christmas Crackers with Wrendale Magnets. Add a touch of Wrendale to your Christmas table with this luxury box of 6 Christmas crackers. Each cracker is made from beautiful textured board and finished with a grosgrain ribbon. These quality crackers each contains a beautiful domed glass Christmas magnet as well as a paper hat and Christmas fact/joke. Cracker measures 35.5cm x 6.5cm. Available in 3 designs, Robin, Woodland or Dog.