Possible Clues:

• One of them to make a sizable bit of brass from a tub?
• Extra items
• Count Dracula marginally welcoming in French extras
• Things in the back
• Extras belatedly added to a book, article, etc
• Dead divers and rough riders
• Appendices at the back of a book
• Back matter parts
• They often get incorporated into the body
• In middle of bad day study extra pieces