The Mari Lwyd is a wassailing folk custom found in South Wales. The tradition entails the use of an eponymous hobby horse which is made from a horse's skull mounted on a pole and carried by an individual hidden under a sheet.

The tradition of wassailing falls into two distinct categories: the house-visiting wassail and the orchard-visiting wassail. The house-visiting wassail is the practice of people going door-to-door, singing and offering a drink from the wassail bowl in exchange for gifts; this practice still exists, but has largely been displaced by carol singing. The orchard-visiting wassail refers to the ancient custom of visiting orchards in cider-producing regions of England, reciting incantations and singing to the trees to promote a good harvest for the coming year. Notable traditional wassailing songs include "Here We Come a-Wassailing", "Gloucestershire Wassail", and "Gower Wassail".