When you get to the puzzle cache coordinates, you will be able to find the cache based on your observations:
What is the craziest place you have ever found a bathtub?
On top of a flagpole? Then the cache is under the puzzle location.
In the mouth of a cave? Then the cache is on a nearby tree branch.
In the branches of a tree? Then the cache is in the tub.
Floating in a pond? Then the cache is in the drain hole.
In a garden bed full of flowers? Then the cache is hanging from the faucet.
On the top of a mountain? Then the cache is on the ground 2 m from the puzzle location.