Saw this type of cache container on my last trip to Europe and decided to bring it here. They call it a PETling. It is made from PET (Polyethylene terephthalate), from which plastic bottles are then made.
The container was unfortunately muggled in May 2019 and has now been replaced with a more common pill-size container.
Va ubyr bs gerr. Or fher gb srry nebhaq gur oraq.