Japan has a game show called "Human Tetris" where contestants have to contort their bodies to fit through holes in a moving wall.

The robotic pet, such as Sony's Aibo, has become a popular form of entertainment and companionship for people who cannot keep real pets.

The sushi conveyor belt, invented in the 1950s, revolutionized the way sushi is served in restaurants and made it more accessible to the average person.