Found-object jewelry is making a comeback and one of my favorite designers is Chris Cobalt out of Chicago. Chris' steampunk-inspired jewelry is mainly created from vintage watches, often in various states of disrepair and rust.
Mechanical Aural Communication Device
Vintage pocket watch keychain "Implosion" Inside the watch are gears suspended in resin to create an implosion effect.
"Trinigears" pocket watch pin
"Spring Heeled Ear" pocket watch gearrings
Insignia Lapel/Hat/Tie Pin