(Image credit: Apartment Therapy )
The Takumi Key Calendar plays upon both the metaphorical and also the innate physical desire to manipulate the mechanical as an effective way to keep track of the days of a month...
(Image credit: Apartment Therapy )
(Image credit: Apartment Therapy )

Instead of a simple flip calendar, the Takumi Key Calendar appeals to the same tactile desire employed when popping plastic bubbles or pressing buttons...who wouldn't be tempted to place the key into the lock to see what happens?