- Origine : Container ship spill along the coast of Brittany
- Description : Yellow bottle tops, occasionally red.
These have 'Zp' printed on the inside. We do not know what they were to be used for or where they came from. The organisation Ansel has been picking them up since 2002 in Concarneau. They seem to have first appeared on beaches in 1995, most likely following the loss of a container at sea, which successive batches of tops seem to be escaping from periodically.