磨穿鉄硯 （マセンテッケン） showing unyielding diligence in one's studies, wearing a hole through one's metal inkstone from constant studying

筆硯 （ヒッケン） writing brush and inkstone, writing, composition, daily life of a writer

硯 （すずり） inkstone

硯洗い （すずりあらい） event where schoolchildren wash their inkstones, brushes and desks the night before Tanabata to pray for success in their studies