Moving to: m/AskMbin!

1960's era microwave oven.

A throne with a skeleton decked out in ancient roman clothing.

A statue like the ones on Easter island!

"They will look just like you. Do not trust them."

The Ozymandius Statue, with the exact quote from the poem.

Penguin Originals: "An Epic of Gilgamesh".

Maybe a Roman coin hoard?

If I would have to put it now to be discovered in - lets say- next week - black monolit from Space Odyssey

If i could put it back in time - replika of some ancient piramid with gliphs stating that human flow to Mars to help martians to build the pyramid

Rick Astley

A green 1987 Lada Niva.

A boat. Specifically one made for taxing through canals.

A sign that says "Moved to Earth"

A Viking longboat.

bending the rules and allowing multiple objects i think a neckbeard nest would be super funny

Pioneer 10.

a chemical toilet

I'd get some clay, make some nonsense sculptures, then just dot them around. There'd be whole reports written on what a triangle with a dot on it could possibly mean.

Not one, but five General Motors TBM Avenger torpedo bombers.

I would put one of those rock faces 🗿. It would make nasa think ancient tribes had space travel capability.

An old rotary telephone.

I'm thinking either the golden disk from Voyager, or the puzzle box prop from Hellraiser.

A hot pocket

A Martian globe.

a rocket perfectly designed for the martian environment, so that the rocket doesnt destroy itself on launch like the starship prototype for one example, and for humans to return home from mars.

Why not the Great Wall of china? Like not the exact Great Wall of China but a duplicate of it that is one to one scale. It would be clearly visible when people are looking at Mars with relatively strong telescopes so we would know it was there long before we were there

A few planks of wood.

Some Neanderthal skeletons mostly buried in the sand so that it looks like they were just uncovered by erosion