What are some of the most unique wand cores you’ve seen in fanfictions or ones that you’d like to see? Or a unique way the author has changed the way people think about it?

I’m not talking about how in some fics Harry has a wand with like 5 cores and hasn’t been used in 200 years bullshit. But individually interesting cores.

Like beyond the normal Phoenix, dragon heartstring, and unicorn hair. Like there has to be more that people use lol.

Like iv seen people adapt dragon heartstring where they specify what type of dragon and that makes it special or unique. Because different types of dragons have different personalities and quirks about them.

Thanks.