Interesting piece here on Live Science – 3,300-year-old skeletons have been found with copper toe rings.
The toe rings were likely worn while the individuals were still alive, and the discovery leaves open the question of whether they were worn for fashion or magical reasons.
Supporting the magical interpretation, one of the rings was found on the right toe of a male, age 35-40, whose foot had suffered a fracture along with a broken femur above it.
However, the second skeleton found near Amarna, capital of the monotheist pharaoh Akhenaten (I have a fondness for him and his era) had no obvious injury or ailment of the foot, so why he/she was wearing it is unknown.
Wearing copper rings for medical reasons continues to this day; I know people with arthritis and rheumatism who wear them on their wrists, though as I’ve been fortunate to avoid such maladies I can’t speak as to their effectiveness. One thing that isn’t considered in the Live Science article, though, is that it’s possible the toe rings were worn then, as now, for fashion reasons.