Japanese design firm NENDO gave the chopsticks a makeover (even though the core design has remained virtually unchanged since the chopsticks appeared in China 4,000 years ago).
You need two chopsticks to eat, but the chopsticks are hard to keep paired, leading to losing one of the chospticks constantly. This is why Oki Sato (lead designer at NENDO) came up with two clever redesign solutions
The first solution is called the Rassen
Chopsticks ordinarily come in pairs. The Rassen chopsticks are a single unit. They’re separated into two for eating, then rejoined into one form when not in use.
The second solution is called Kamiai
Each individual chopstick has a slight notch on its thicker end. The tips of the chopstick have tiny magnets with opposing polarity embedded in them. Not only does this design allow the chopsticks to slightly repel each other, preventing them from sticking together, but when flipped head-to-toe, the Kamiai chopsticks magnetically attach to one another.
Chopsticks are shaped pairs of equal length sticks used as the traditional eating utensils of various East Asian countries. Chopsticks originated in ancient China, and are now used in China, Japan, Korea, Indonesia and Vietnam. They can also be found in some areas of Tibet and Nepal. Chopsticks are smoothed and frequently tapered, and are commonly made of bamboo, plastic, wood, or stainless steel. They are less commonly made from porcelain, silver, ivory or jade. Chopsticks are held in the dominant hand, between the thumb and fingers, and used to pick up pieces of food.