Thoughts screamed into a void that might scream back...

A currency that isn’t gold-standard/having gold be as valuable as tin

A currency that runs entirely on a perishable resource, like cocoa beans

A clock that isn’t 24-hours

More or less than four seasons/seasons other than the ones we know

Fantastical weather patterns like irregular cloud formations, iridescent rain

Multiple moons/no moon

Planetary rings

A northern lights effect, but near the equator

Roads that aren’t brown or grey/black, like San Juan’s blue bricks

Jewelry beyond precious gems and metals

Marriage signifiers other than wedding bands

The husband taking the wife's name / newlyweds inventing a new surname upon marriage

No concept of virginity or bastardry

More than 2 genders/no concept of gender

Monotheism, but not creationism

Gods that don’t look like people

Domesticated pets that aren’t re-skinned dogs and cats

Some normalized supernatural element that has nothing to do with the plot

Magical communication that isn’t Fantasy Zoom

“Books” that aren’t bound or scrolls

A nonverbal means of communicating, like sign language

A race of people who are obligate carnivores/ vegetarians/ vegans/ pescatarians (not religious, biological imperative)

Gold is worthless in Quiet Space, as is everything except time itself. Access to space and automation of labor kind of kill the concept of scarcity of goods entirely and well, that's it for economics as we know it. The Terran Protectorate's closest thing to a currency is a literal credit system that entitles you to X hours of the empire's industrial capacity.

I mean, time is fleeting...

Its a stellar Empire. Only one clock is 24 hour and it's Earth's. The odds of another planet having the same rotational speed is basically 0.

Again since most places in my setting are not on Earth and therefore axial tilts are different... and also most megastructures and space habs don't have seasons at all...

I've got a planet that rains diamonds. Okay sure I'm just borrowing it from reality but people can go there and do things.

Most planets have more than 1 moon, turns out.

One of the human Clann's homeorlds is a gas giant. It has rings. Several planets have orbital ring habitats, but I don't think that's what you meant.

I have this, but the world is uninhabitable without bleeding edge shield technology.

I've got the star roads. They're invisible, does that count? TLDR; they're a FTL system that pushes craft in them faster than light by using a spinoff of gravitational drive technology to sort of ripp off mass effect but instead of sling shots it's based on the US highway system.

The Runi use wood for some of their jewelry.

The Thymrai don't use anything for wedding band type signifiers of marriage. They use their words "We're one." or "I have my mate." and if you don't respect that they'll probably stab you because you're calling them a liar and that's fighting words in their culture.

The Glorin always make a new name from select syllables from both prior names when they wed. They're also nano-hiveminds with each individual having 3 bodies, so most of their scocial things are odd.

I have several robotic species which genuinely would not be able to grock the idea of bastardry. "But... they manufactured you. You are their creation. Circumstances are irrelevant."

Most of my aliens do not use binary sexes. Many of the monosex species don't have a concept of gender at all because WHY WOULD THEY?

The Glorin again. They discount other gods as gods because they know they're just extradimentional entities that live in hyperspace. Their god does not live in hyperspace and seems supernatural to other gods. She also dosn't do the normal god things, she shows up like your cool aunt coming back to town and will do things like make your whole species immune to cancer and call it a "bug fix".

Again, the Glorin's god. She's very lovecraftian in appearance unless she specifically takes on a humanoid form for whatever reason (but she'll complain the entire time about how painful it is to "scrunch up like this")

Given designer organisms are a thing for Terrans, I've got this one. Because many of them are reskined other critters! (I may work on this one later today)

Plot? You assume I worldbuild to tell a narrative? Lol! I'm that wierdo who worldbuilds as their main hobby and sometimes you get a story out of it because I got bored.

I've got this one. What? This is a science-fantasy setting. Not sci-fi. TLDR; you can get a journal that will tell you everything friends that have willingly touched the journal did yesterday. It resets every time you sleep and fills you in on the previous day with every reset. This is, in fact, communication. Its just not real time or intentional. Yes this thing can end friendships, but its popular with Terrans because Terran society is about authenticity in 4269 and if your best friend actually thinks you're lame you want to know so you can terminate the friendship and find someone else (also their whole family would shame them as being inauthentic is as big of a social taboo as incest is today).

Books don't exist anymore. All information you want is either a direct download to your brain, or a VR experience. So... Yeah I've got this covered. Its not even a "well I love old things, so I still read books!" type of deal. If you read a book someone would look at you with the same incredulity that you would look at someone trying to light their bong by rubbing two sticks together. You'd probably also alert Central to a mental health crisis.

Many species communicate by psionic or digital telepathy. But sign langauge dosn't exist outside of millitary applications anymore. Not because "screw deaf/mute people!" but because genetic engineering has eliminated those conditions entirly. No one is born with physical disadvantages anymore. And even if they were, they'd be able to have them removed for free any time after they turn 16 since medical technology can reshape your body howeaver you please and has hit the "IRL Korean MMO character creator" point of "no further development necessary". (Yes that is a cornerstone of Terran culture. Part of that "be authentic" deal is your expected to live in a body that is "you" rather than whatever you were born as.)