Tootsie Rolls, invented by Leo Hirschfield in 1907, were the first penny candy to be individually wrapped in America.

According to Charles Kennard, one of the original manufacturers of the Ouija board, William Fuld (who is credited with naming the device) learned the name "Ouija" from using the board. Years later, Fuld would change his story, claiming it was merely a combination of the French and German words for "yes".

It means "hallowed evening" or "holy night".

All Saints' Day, also known as All Hallows, Day of All the Saints, Solemnity of All Saints, or Feast of All Saints is a festival celebrated on November 1st by the Latin Church of the Roman Catholic Church and some other Western Christian traditions, and on the first Sunday after Pentecost in Eastern Catholicism and Eastern Orthodoxy, in honour of all the saints, known and unknown.

The Oxford English Dictionary dates the first appearance of the English word vampire (as vampyre) from 1734, in a travelogue titled Travels of Three English Gentlemen.

In Mexico, the practice of trick-or-treating is called calaverita (Spanish for "little skull"). Instead of saying "trick or treat", the children ask ¿me da mi calaverita? ("can you give me my little skull?"). A calaverita is a small skull made of sugar or chocolate.

Black and orange are typically associated with Halloween. Orange is a symbol of harvest and autumn. Black is a symbol of death and darkness and acts as a reminder that Halloween once was a festival that marked the boundaries between life and death.

The modern practice of trick-or-treating may have evolved from several customs such as mumming (going door-to-door performing scenes for food), souling (begging "soul-cakes" by singing under windows), and guising (wearing costumes at Hallowmas).

During the ancient celebration of Samhain, Druids were said to throw cats into a fire, often in wicker cages, as part of divination proceedings.

The adze is a vampiric being in Ewe folklore that can take the form of a firefly, though it will transform into human shape upon capture.