Families normally ensure that girls have a set of the two main dolls before their first Hinamatsuri. The dolls are usually fairly expensive ($1,500 to $2,500 for a five-tier set, depending on quality) and may be handed down from older generations as heirlooms. The hinakazari spends most of the year in storage, and girls and their mothers begin setting up the display a few days before 3 March (boys normally do not participate, as 5 May, now Children's Day was historically called "Boys' Day"). Traditionally, the dolls were supposed to be put away by the day after Hinamatsuri, the superstition being that leaving the dolls any longer will result in a late marriage for the daughter, but some families may leave them up for the entire month of March. Practically speaking, the encouragement to put everything away quickly is to avoid the rainy season and humidity that typically follow Hinamatsuri. Historically, the dolls were used as toys, but in modern times they are intended for display only. The display of dolls usually discontinues when the girls reach 10 years old.