This plate resembles the shape of Hagoita, which is an rectangular wooden racket-like tool which is used for the New Year's game called Hanetsuki.
The plate itself is a fun design, and whatever you put on it becomes art.
size: 11.0X3.9 inches(28.0X10.0cm)/height 0.6 inch(1.5cm)/weight 8.2 oz(230g)