Ethiopian Snake Fetish
A small magical spirit fetish that if you make a deal with the spirit in it (Season_Six#2022-05-07) enables you to turn invisible if you keep moving.
One is in the possession of Carlie who stole it from an Ethiopian Catholic Church as part of a deal with the Forty Elephants, who have another two of them (Season_Six#2022-01-31).
It was originally stolen from Ethiopia by the Rogue Geomancer who then hit it in the church, when he went to retrieve it and it was missing he caused damage to the Church and was hunted by The Guild and The Southwark Belles.