Have a stroll around Knole Park and find this cache nearby.
It's a tub that can take travel bugs and small swaps.
From Janet Davies, "A History of Sevenoaks":
In 1456 Thomas Bourchier, Archbishop of Canterbury, bought the Knole estate. He turned the jumble of old buildings into a palace fit for an archbishop. He was a great builder and transformed Knole into a home where religious leaders, royalty and, eventually, the Sackville family could live in splendour.
Bourchier died at Knole in 1486. In 1538, King Henry VIII decided that he wanted the Knole estate for himself.
King Henry VIII 'persuaded' Archbishop Thomas Cranmer that he should be given Knole.
Henry's daughter, Elizabeth I, inherited Knole. She gave the house to the Sackville family in 1577. The Sackvilles still live there, but the estate is now owned and managed by the National Trust.