The "scapulars" mentioned in Calypso, Nausicaa, and Circe are Catholic cloth badges that hang from the shoulders (the name derives from the scapula or shoulder blade). Many monks and nuns wear long, shoulder-width, apron-like outer garments called scapulars as part of their habit, but the ones Joyce has in mind are smaller devotional items worn by laypeople. They are usually small rectangles (no more than a few inches on a side) connected by two cords or cloth tapes so that one patch can lie on the chest and the other on the back. Most often, they signify devotion to the Blessed Virgin Mary.

John Hunt 2017

2007 photograph of brown scapulars by Sarah Sofia. Source: Wikimedia Commons.