Suzuri no tamashii' or 'suzuri no sei' is one of 'tsukumogami' (a type of Japanese spirits that originate in items or artifacts that have reached their 100th birthday and become alive) as described in "Konjaku Hyakki Shui" (literally, Supplement to The Hundred Demons from the Present and the Past), a yokai (Japanese ghosts, spirits, spooks and monsters) art collection book or supernatural bestiary by Sekien TORIYAMA.
硯の魂（すずりのたましい）または硯の精（すずりのせい）は、鳥山石燕の妖怪画集『今昔百鬼拾遺』にある付喪神（器物が変化して生まれた妖怪）の一つ。