Or a really cheap single set piece that vaguely fits the theme of an ancient earth culture that has managed to not change at all in millenia, and then there is a single high tech alien device in the middle of it.
BTW, I say that with love. Stargate is the best.
“Wait wait, you’re from Doloron? Oh my god, I work with someone from the Swamp Planet!”
“Why does everyone call it that. It’s a planet with one or two famous swamps.”
“What was it like growing up in a mud hut?”
“We have other ecosystems! You know, mountains, fields, outlet malls…”
“How did you get to school? Bark canoes? On the back of a swamp snail?”
“No, like everyone else… In hover cars.”
“Is it true you all have eggs sacs? Take off your pants.”
“No I’m not taking off my pants!”
“Aha! We got a swamp monster here!”
“Shut up! Shut up! Shut up! (sigh) 50 years ago, Dread Trooper scouts landed in a swamp on our planet, and for some reason didn’t bother exploring anywhere else. If they had gone one mile to the left, they would have found some beautiful beachfront condos. But they didn’t. And now… we’re the (air quotes) swamp planet. How do you think that makes me feel?”
“I uh…”
“Don’t say anything. Let’s just eat our lunch in silence.”
“… Is that moss!?”
“It’s a delicacy!”
“Wrong username. Correct password.”
“Uh… who’s password?”
It’s from an old College Humor Troopers sketch