Coppermind

The Coppermind begins as a simple Feruchemical storage device in The Well of Ascension, a small engraved metal bracer or earring used by Keepers to hold memories and knowledge for instant recall. Throughout the series, it evolves from a passive repository of information into an active tool for preserving and transmitting critical knowledge across generations, particularly as the Keepers face threats to their existence and the survival of their accumulated wisdom. Its role expands beyond mere storage to become a vital instrument in the preservation of Scadrial's history and the fight against tyranny.