You can actually thread ribbons through the holes. It's also recommended for creating sharing files, and it's very cute. Please refer to the green mat below for the size; each grid is 1cm. We will discount the duplicate shipping costs if you purchase with other items. If you wish to do so, please let us know via comments or a combined purchase request. When requesting a combined purchase, please submit the request at the original price. We will calculate the shipping cost later and adjust the price accordingly.