Several of the traditional activities from Ireland and Britain involve foretelling one's future partner or spouse. An apple would be peeled in one long strip, then the peel tossed over the shoulder. The peel is believed to land in the shape of the first letter of the future spouse's name. Two hazelnuts would be roasted near a fire; one named for the person roasting them and the other for the person they desire. If the nuts jump away from the heat, it is a bad sign, but if the nuts roast quietly it foretells a good match. A salty oatmeal bannock would be baked; the person would eat it in three bites and then go to bed in silence without anything to drink. This is said to result in a dream in which their future spouse offers them a drink to quench their thirst. Unmarried women were told that if they sat in a darkened room and gazed into a mirror on Halloween night, the face of their future husband would appear in the mirror. However, if they were destined to die before marriage, a skull would appear. The custom was widespread enough to be commemorated on greeting cards from the late 19th century and early 20th century.
Halloween costumes are costumes worn on or around Halloween, a festival which falls on October 31. An early reference to wearing costumes at Halloween comes from Scotland in 1585, but they may pre-date this. There are many references to the custom during the 18th and 19th centuries in the Celtic countries of Scotland, Ireland, Mann and Wales. It has been suggested that the custom comes from the Celtic festivals of Samhain and Calan Gaeaf, or from the practise of "souling" during the Christian observance of Allhallowtide. Wearing costumes and mumming has long been associated with festivals at other times of the year, such as on Christmas. Halloween costumes are traditionally based on frightening supernatural or folkloric beings. However, by the 1930s costumes based on characters in mass media such as film, literature, and radio were popular. Halloween costumes have tended to be worn mainly by young people, but since the mid-20th century they have been increasingly worn by adults also.