Mari-Lwyd is a South Wales folk tale and tradition whose name translates to ‘grey mare’. It is believed to have originally come from Celtic mythology as a creature able to pass from the overworld to the Underworld. Despite her ancient roots, her modern existence is quite fun. Today, Mari-Lwyd is represented by a stick horse with a horse skull and a white sheet that covers the person carrying it around. Many people decorate the skull with things like flower crowns, among other things. The Visit Wales website explains that Mari-Lwyd shows up around Christmas, going from door to door challenging those who open their door to it. Afterward, the residents and the person toting Mari-Lwyd have a round of alcohol and cakes.