The Pepper Pot
Looks something like a normal bird box but this one has a few holes in the roof!
The finder will easily locate the square block on the top with what appears to be a blunt prodder sticking out underneath.
With the prodder in hand they can start trying each hole in the lid to see what happens, eventually they will find one hole that is deeper than the others and when the device is pushed down the base will drop open!
A stout container, log & pencil are supplied as are suitable wood screws and a spare prodder device as things do get lost!
Youtube Clip - https://youtu.be/tE6WDfHlhi8
As with all my bird box designs the hole is only drilled to half the wood depth then the hole is painted black to prevent any feathered friends taking up residence!!!