A Death Note is the titular supernatural notebook used by the Shinigami to sustain their life, as well as a principal figure in the Eponymous series. While appearing as your typical black notebook, Shinigami are able to choose what adorns their notebooks' covers, if anything. Most notes, however, such as Rem's, are plain black and lack writing on their covers, but Shinigami occasionally write their name on it as a joke. Death Notes can also be red or white, though these types are rare. Depending
Rules of the Death Note/How to Read Rules, Death Note Wiki
Death Note
Death Note (object), Death Note Wiki
Death Note (object), Death Note Wiki
Rem, Death Note Wiki
Yuri, Death Note Wiki
Matt, Death Note Wiki
Rem's Death Note, Death Note Wiki
L (character), Death Note Wiki
Death Note - Wikiquote
Ryuk, Death Note Wiki
Death Note: The Last Name, Death Note Wiki
Death Note, Death Note Wiki
Death Note A5 Ruled Binded Notebook – Epic Stuff, 50% OFF
Part I, Death Note Wiki