Today we visited Killerton House. http://www.nationaltrust.org.uk/main/w-vh/w-visits/w-findaplace/w-killerton/
Unfortunately our visit co-incided with 'Wild Wednesday' so the place was over run with princesses, and the odd prince, or Scooby Doo (presumably whatever the boys could be persuaded to dress up in!)
In each room a mouse is hidden. The one in the library took a lot of finding, took 2 guides to help us track it down!
Here is one hidden in a replica of the sugar rationing display, from the war time when the Home played host to 2 schools.
['] For those who grew up during war, may the scars heal.