Ambergris, Whale Vomit

In the 2001 film Hannibal (film), Hannibal Lecter sends Clarice Starling a letter which he writes while intentionally wearing a hand lotion containing ambergris, correctly assuming that this would ultimately aid her in discovering his location in Florence, Italy, due to it being legal only in few parts of the world.
In R.A. Salvatore's book Charon's Claw there is a dwarf female named Ambergris, short for Amber Gristle O'Maul, o' the Adbar O'Mauls.