Kurogane Kosakusho

Kurogane Kosakusho Ltd. (often shortened to Kurogane) is a Japanese furniture company that mostly works on office furniture, such as desks and chairs. Nintendo has worked alongside Kurogane several times to create several Super Mario-themed desk accessories and furniture.

Super Mario Bros. collection
Kurogane released its first collection of Super Mario-themed furniture in 1986. It was based on the video game Super Mario Bros., and the collection included:


 * One garbage bin costing 1,600 yen.
 * One rug costing 7,500 yen.
 * One shelf and clothing rack combination costing 19,500 yen.
 * Two different-sized cutting mats costing 2,200 and 3,600 yen.
 * Two different-sized desk mats costing 2,100 and 2,600 yen.
 * Two different-sized "S" racks costing 12,800 and 13,800 yen.
 * Two different-sized study boards costing 950 and 1,100 yen.
 * Nine chairs with different designs and styles with prices ranging from 7,600 to 12,800 yen.

Super Mario Bros. 3 collection
Sometime between 1988 and 1990, Kurogane released another furniture collection based on Super Mario Bros. 3.

Super Mario World collection
In 1990 or 1991, Kurogane released its third Super Mario-themed furniture collection, this one being based on Super Mario World. The collection included:


 * One heated rug costing 15,500 yen.
 * One reading board costing 1,800 yen.
 * One whiteboard costing 1,000 yen.
 * Two different-modeled garbage bins with different designs costing 1,700 yen.
 * Two different-sized study boards costing 1,000 and 1,800 yen.
 * Two rugs costing 8,300 and 9,000 yen.
 * Three different-sized cupboard and clothing rack combinations with prices ranging from 25,000 to 30,000 yen.
 * Five different-sized desk mats costing 3,200 and 3,900 yen.
 * Six different-sized schoolbags with the same design with prices ranging from 20,000 to 69,800 yen.
 * Nine chairs with different designs and styles with prices ranging from 12,500 to 18,500 yen.

Super Mario Advance collection
In 2002, Kurogane released a collection based on Super Mario Advance. The collection included:


 * One double-sided desk mat design in four different sizes with prices ranging from 3,500 to 4,000 yen.
 * One randoseru design with nine different sizes ranging from 33,000 to 70,000 yen.
 * One rug costing 9,500 yen.
 * One double-sided study sheet.
 * Two chair models with three different designs costing 16,800 and 17,800 yen.

Alongside the collection included a Mario Party 2-themed garbage bin and desk mat respectively priced at 2,200 and 3,500 yen.