Saturn V, Command & Service Module, Lunar Lander, Lunar Rover, 3 Astronauts.
These models are fairly low-fidelity but they are accurate enough to be used in the museum. I found them in a kitset model shop, although they barely count as "kitset" — they consist mostly of snap-together parts.
These models formed the heart of my first space display, so they have a bit of sentimental value as well.