On October 31, All Hallows Eve, the children make a children's altar to invite the angelitos (spirits of dead children) to come back for a visit. November 1 is All Saints Day, and the adult spirits will come to visit. November 2 is All Souls Day, when families go to the cemetery to decorate the graves and tombs of their relatives. The three-day fiesta is filled with marigolds, the flowers of the dead; muertos (the bread of the dead); sugar skulls; cardboard skeletons; tissue paper decorations; fruit and nuts; incense, and other traditional foods and decorations.
People go to cemeteries to be with the souls of the departed and build private altars containing the favorite foods and beverages, as well as photos and memorabilia, of the departed. The intent is to encourage visits by the souls, so the souls will hear the prayers and the comments of the living directed to them. Celebrations can take a humorous tone, as celebrants remember funny events and anecdotes about the departed.
Plans for the day are made throughout the year, including gathering the goods to be offered to the dead. During the three-day period families usually clean and decorate graves; most visit the cemeteries where their loved ones are buried and decorate their graves with ofrendas (altars), which often include orange Mexican marigolds (Tagetes erecta ) called cempasúchil (originally named cempoaxochitl, Nahuatl for "twenty flowers"). In modern Mexico the marigold is sometimes called Flor de Muerto (Flower of Dead). These flowers are thought to attract souls of the dead to the offerings.
Toys are brought for dead children (los angelitos, or "the little angels"), and bottles of tequila, mezcal, pulque or jars of atole for adults. Families will also offer trinkets or the deceased's favorite candies on the grave. Some families have ofrendas in homes, usually with foods such as candied pumpkin, pan de muerto ("bread of dead"), and sugar skulls; and beverages such as atole. The ofrendas are left out in the homes as a welcoming gesture for the deceased. Some people believe the spirits of the dead eat the "spiritual essence" of the ofrendas food, so though the celebrators eat the food after the festivities, they believe it lacks nutritional value. Pillows and blankets are left out so the deceased can rest after their long journey. In some parts of Mexico, such as the towns of Mixquic, Patzcuaro and Janitzio, people spend all night beside the graves of their relatives. In many places people have picnics at the grave site, as well.
Some families build altars or small shrines in their homes; these sometimes feature a Christian Cross, statues or pictures of the Blessed Virgin Mary, pictures of deceased relatives and other persons, scores of candles, and an ofrenda. Traditionally, families spend some time around the altar, praying and telling anecdotes about the deceased. In some locations, celebrants wear shells on their clothing, so when they dance, the noise will wake up the dead; some will also dress up as the deceased.