While looking up how the Ancient Greeks used the pillory (as mentioned in Herodotus), I stumbled across a totally unrelated fact: "In Ancient Greece, bankruptcy laws forced the debtor to sit in the market place and place a basket over his head." I had never read that anywhere, so I thought it was interesting.
It's always interesting how while looking for one thing, we find another. I didn't find anything on the use of pillories in Ancient Greece though. I wanted to know since King Cleomenes of Sparta gets thrown in one by his relatives. Did it look like the ones used in Europe 1000 years later? It would be interesting to know for my novel.