Pixel often makes movie / literary references so upon seeing the seagulls on the Ferris wheel, my first thought was an homage to The Birds (Hitchcock.)
Both Challenges seem to have movie/book/show references.
Borgo Mountain Pass (Dracula)
the lil robot (Star Wars)
Kevin's House of Postcards (House of Cards)
The bus in Speed (nice!)
I know there's others, but my little brain can't function...
As for anything else in the Challenges, like a snowman in the loo, I chalk it up to a few to many alcoholic beverages or recreational herbs...or both🙃