"To Serve Mankind", it's a cookbook.
* * *
For myself, I'm not the best at this, better at hints of setting:
Being on the moon with Steve.
Helheim is invaded by flying saucers.
Carter served three terms back home.
Mirrors are the worst guarded gateways.
Yesterday depends upon what happens tomorrow.
When an AI tells you, "Run. . ."
The aliens want our Dijon mustard.
(And the sequel:)
The troglodytes want our yellow mustard.
Zombies are ok; others are terrifying.
Time till oxygen reserves depleted extended.
Do not touch the planetary soil.
So, we blew up the ship.
Robots are fine; humans in revolt.
It's not the Earth I left.
Naglfar has collided with Planet X.
Avoid the Rapture; move to Mars!
All it took was a toaster.
Easter Island was the Alien FOB.
We learned to fight without seeing.
Exchange rates fluctuate faster than light.
All they wanted were some rocks.
After the war, we were wanderers.
Moon mining is much safer now.
Let's nuke the site from orbit.
It ate our command crew; perfect.
In zero gravity, skirts aren't recommended.
We should run and hide now.
Reversing the polarity usually doesn't work.
Anyone receiving this message, run away.
Peace with the squids is advisable.
It's always, "Fix technobabble or die."
Of all possible worlds, why Earth?
We killed their god by accident.
We've evolved a more enlightened imperialism.
I love this falling apart ship.
An overthruster replaced the flux capacitor.
Particle, wave? Who cares? Let's surf.
I will have hated time travel.
* * *
And so on.