Feruchemical Metalminds

Mistborn: The Final Empire

Small metal items like thick iron bracers on upper arms, copper bracers, earrings, rings, bracelets; plain metal bands or simple shapes; worn as cultural jewelry by Terrismen; store physical attributes like strength, memories, sight without burning.

The Well of Ascension

Expandable metal braces/rings/bracelets/bracers/piercings (e.g., unconnected on one side for pewter/iron, thin heavy iron/pewter ankle bracelets, small tin/copper finger rings, large coppermind arm bracers) worn on body; store physical/mental attributes like strength (bulging muscles), weight (crushing heaviness), warmth (body heat), senses, speed; body transforms dramatically without loose skin; filled by Feruchemists then tapped for power