Chopsticks are eating utensils.
They are often given as gifts because the Japanese term for "handing over chopsticks" sounds the same as "bridge building," as in creating a relationship, so they make an auspicious present.
They can be made of a variety of materials: wood, bamboo, ivory, metal, and so on.
They also come in an array of lengths, thicknesses, weights, shapes, designs, and pliabilities, allowing people to choose from a huge assortment to find a pair that suits the size of their hand, their age, and their needs.
Among the peoples of the world, approximately 30 percent use chopsticks for eating, but most of them do so in combination with a spoon or fork and the Japanese are the only people to use only chopsticks for virtually all their food.
A child's first food is eaten using chopsticks in a ceremony called okuizome and when a person dies, their bones are collected using chopsticks.
In this way, Japan has developed a unique culture regarding the use of chopsticks.
Iwai-bashi are chopsticks that are used on celebratory occasions; one end is to be used by the person, the other end by the god, representing the "bridge-making" of a relationship with the deity.