We always went mummering from door to door as kids to get treats. ADults, did it as well, their treats being more liguid. We always disquised ourselves by wearing old underwear or clothes that was too big, etc and put "stuffing" inside to make us look big and funny shapes. We wore pillow cases over our head with holes cut for eyes and mouth.   This tradition has died out over the years, however, a few people still go to friends and family.