We actually only need 21 cards, not 24, so I'll just give 3 of my own:
Landmark: The giant drive-in movie theater screen. Townsfolk have gathered in kayaks and rafts, munching on popcorn as they watch a B-movie marathon, currently showing Waterworld.
Flotsam/Jetsam: A sailing boat crewed by a black cat, a capybara, a Labrador retriever, a lemur, and a secretary bird.
Hazard: An angry narwhal?!?