Symbols of rank?

[Cerarienh]

I was wondering what kind of "things" (for lack of a better word) can a pirate wear that gives hints as to his/her rank or the job they do aboard their ship?  For example . . . I know a couple of ships surgeons who wear cast metal scissors on their belts.  What would other members of the crew wear?

[renren]

keys, for the jailer.

[jcbanner]

the ship's carpenter had a red knit cap that he would always wear.  It wasn't just a plain red knit cap though, it was "fuzzy" I guess is the best way to describe it.

[Charlotte Rowan]

My character's a navigator, so I just bought a compass to wear... *shrug*

[Cerarienh]

Thank you for the ideas and responses.  I was recently promoted to Captain and am looking for some ideas for my crew.    

[Obadiah Jib]

How about a whistle for your Bosun.  A few old maps for your Pilot/ Navagatior.  Keys for your Quartermaster/ First Mate (for the treasure chest or armory).  Rope for your Sailmaster. 

[Cerarienh]

Great ideas everyone!  Thank you.