I've seen "ommer" used for nonbinary equivalent to aunt/uncle - just in case you hadn't run across that one yet. Cheers!
Oh hell yeah thank you!
My previous googling had only given me horrible neologisms like auncle and fukcing pibling, but with ommer as a keyword I was able to find a whole lot more stuff like an entire nonbinary wiki.
For anyone else having difficulties finding gender-neutral terms, this page is a hub for gender-neutral terminology is a variety of languages. Here is the English language one in particular.
I actually kinda love the mouth-feel of “ommer” (I can’t seem to find any sort of etymology for it, so I think it might have just been created whole-cloth rather than as a derivation from other words), and they also list some really cute ones like “nibi.”
This is an absolute treasure trove thank you!!!














