Donut's seemingly minor third-floor oak bracelet becomes one of two item-origin paths capable of advancing the divine murder investigation.
Donut looted the bracelet from the dead body of one of Bautista's family members on the third floor. It has remained a throwaway accessory without obvious narrative importance.
Through Pater Coal, the dungeon AI says the bracelet's origin is crucial to solving Geyrun's murder once Apito's memorial crystal is obtained. The oak material may point toward the Oak Mother, though no direct connection is confirmed.
Carl withholds the clue in the saferoom because Bautista is present and apparently never realized Donut took the item from his relative.
A simple bracelet carved from old oak, visually unremarkable but carrying a hidden divine provenance.
The bracelet is Donut's dormant quest key and a sensitive secret involving Bautista's dead family.