Virtually all present Halloween

Virtually all present Halloween traditions can be traced to the ancient Celtic day of the dead. Halloween is a holiday of many mysterious customs, but each one has a history, or at least a story behind it. The wearing of costumes, for instance, and roaming from door to door demanding treats can be traced to the Celtic period and the first few centuries of the Christian era, when it was thought that the souls of the dead were out and around, along with fairies, witches, and demons. Offerings of food and drink were left out to placate them. As the centuries wore on, people began dressing like these dreadful creatures, performing antics in exchange for food and drink. This practice is called mumming, from which the practice of trick-or-treating evolved. To this day, witches, ghosts, and skeleton figures of the dead are among the favorite disguises. Halloween also retains some features that harken back to the original harvest holiday of Samhain, such as the customs of bobbing for apples and carving vegetables, as well as the fruits, nuts, and spices cider associated with the day.
Halloween is usually celebrated amongst family, friends and, sometimes, co-workers. However, some areas hold large community events. Parties and other events may be planned on October 31 or in the weekends before and after this date. Adults may celebrate by watching horror films, holding costume parties or creating haunted houses or graveyards.
Some families carve lanterns with 'scary' faces out of pumpkins or other vegetables or decorate their homes and gardens in Halloween style. These were traditionally intended to ward off evil spirits. If you are at home on Halloween, it is a good idea to have a bowl of small presents or sweets to offer to anyone who knocks on your door. This will help you to please the little spirits in your neighborhood!
One cause that ties with Halloween is collecting donations for the United Nations International Children's Emergency Fund (UNICEF). As children trick-or-treat on Halloween night, some of them might carry small cardboard boxes with the UNICEF logo on them and collect coins instead of the usual candy. The money collected is then given to UNICEF and used to help needy children worldwide.