Here is a pdf with some differently-sized Advent Clock faces numbered to 24.
At Ferryhill Parish Church we are using these to decorate the Christmas Tree at our Advent: A Journey Through Time labyrinth on 1 December. Each station will have a different character (Isaiah, Joseph, Mary, Angel, Shepherd, Wise Man) dressed in character who gives an improvised monologue to groups of 4-6 folks. Then there will be activities to follow up as people decorate one of the clock faces with, in order, scroll, wood shavings, create icon of Mary using blue cloth and silver pens, an angel with silver pens and paper (corrugating rectangle of paper to staple in the middle and fan out at the ends for wings), cotton wool and black pens to create sheep plus white pipe-cleaners for shepherds crooks), and sticky stars and glitter pens to create image representing gift/crown from Magi. Download Advent Clock Template.pdf