Let's write!

I once saw a Tumblr post that noted that you have to be careful about using real-world references in fantasy fiction, that you shouldn't be calling the hairstyle your Lord of the Rings elf is wearing a French braid, because there is no France in that realm. You can really go down a rabbit hole with this (after all, you could say that you can't write LotR dialogue at all because English isn't a language there at all), but let's go with the spirit of the thought.

Write a scene set either in a fantasy realm or on a distant planet, with no humans to mention any Earth culture. It can be about anything, but include a familiar concept that has an Earth name. However, you have to transform it into that location's culture. This might be as simple as renaming that French braid as a Milvin twist, or you could describe the hairstyle rather than naming it. You don't need to include in your scene why it's called what it's called; just assume that the worldbuilding had been done earlier in the encapsulating story.