But some things were intentionally left behind. It’s not all just Moon junk though, some are still functioning, and some is there for sentimentality’s sake. A golden olive branch left on the moon's surface by the Apollo 11 astronauts to represent peace.

Astronaut Charles Moss Duke left a photograph of himself, his wife and two sons on the surface of the moon during the Apollo 16 mission. The most famous thing Neil Armstrong left on the moon 35 years ago is a footprint, a boot-shaped depression in the gray moondust.
Answer: An American Flag was left on the moon by Apollo 11. Image to left: The Eagle has landed. So was the descent stage of the Eagle lunar landing module, a plaque, a tiny silicon disc, an Apollo 1 … Moon buggies and bags of poo: what humans left on the moon This article is more than 10 months old After 50 years of exploration, the lunar junkyard holds nearly 200 tonnes of objects But what’s exactly is all that stuff we left on the moon?

Millions of people have seen pictures of it, and one day, years from now, lunar tourists will flock to the Sea of Tranquility to see it in person. By the time NASA's Apollo Program came to a close in December 1972, six crews of astronauts, six Apollo command modules, and more than 800 pounds of Moon rocks and lunar soil had been brought back to Earth. Armstrong and Aldrin also left behind about a hundred far less sentimental objects on the moon: tools, gear, and trash. Besides the 2019 Chinese rover Yutu-2 the only artificial objects on the Moon that are still in use are the retroreflectors for the lunar laser ranging experiments left there by the Apollo 11, 14, and 15 astronauts, and by the Soviet Union's Lunokhod 1 and Lunokhod 2 missions. NASA wanted the mission to …
Things Left on the Moon: Scientists estimate that mankind has left over 413,000-lbs of material on the moon. Will anyone notice, 100 feet away, something else Armstrong left behind?