Dia de los Muertos is celebrated every year on November 1st and 2nd, during which time it is believed the spirits of the dead return to visit the living. People buy toys and traditional sweets for the dead children and different alcoholic drinks for the deceased adults. They build shrines on the tombs and plce the trets there so the dead can consume the spirit of the foods. Even though they are eventually consumed by the living, the foods are believed to have no nutritional value.