A few recommendations from the Yuletide fanfic exchange:
For Ursula K. Le Guin's The Dispossessed: world-building/early history of Annares, set between "The Day Before the Revolution" and the novel:
https://archiveofourown.org/collections/yuletidemadness2021/works/35856979, by Luzula
For her The Left Hand of Darkness: world-building and backstory about the first Ekumen investigators on Gethen
https://archiveofourown.org/collections/yuletide2021/works/35769040, by Serenity_Ribbon
Some more world-building, for Katherine Addison's The Goblin Emperor, with the summary "A day in the life of the Untheileneise kitchens." I think this one works without knowing the canon.
https://archiveofourown.org/works/35754262, by Tequila_Mockingbird
And a short post-canon story for Arkady Martine's Teixcalaan books:
https://archiveofourown.org/collections/yuletide2021/works/35712937, by wolfraven80
ETA Jan. 1: I have added author names, now that they've been revealed.
For Ursula K. Le Guin's The Dispossessed: world-building/early history of Annares, set between "The Day Before the Revolution" and the novel:
https://archiveofourown.org/collections/yuletidemadness2021/works/35856979, by Luzula
For her The Left Hand of Darkness: world-building and backstory about the first Ekumen investigators on Gethen
https://archiveofourown.org/collections/yuletide2021/works/35769040, by Serenity_Ribbon
Some more world-building, for Katherine Addison's The Goblin Emperor, with the summary "A day in the life of the Untheileneise kitchens." I think this one works without knowing the canon.
https://archiveofourown.org/works/35754262, by Tequila_Mockingbird
And a short post-canon story for Arkady Martine's Teixcalaan books:
https://archiveofourown.org/collections/yuletide2021/works/35712937, by wolfraven80
ETA Jan. 1: I have added author names, now that they've been revealed.
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I'm comfortable doing so now, because it was a matter of respect for the author and her feeling that these were her creations, not anything that would be likely to affect royalties.
There are also a few Always Coming Home fics on AO3l, I think from a previous Yuletide.
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