Eyeballs!
During my normal internet wanderings I came across this amazing photo of glass eyeballs. (And let's give full credit where credit is due because I admit to having stolen this; the photographer is Gwendolyn True) Unfortunetly the only information she has about the image is the following,
Monsieur Faurie's glass eye collection: In an antique shop off the plaza in Taos. Monseiur Faurie has the most fascinating - and disturbing - collection of antique medical equipment. I'm so glad I live in an era of novocaine and pneumatic drills and preventative care.