Queen Himiko was ruler of the Japanese territory later to be known as Yamato in the 3rd century AD. She was alleged to be an unmarried shaman who lived in a fortress served by 1,000 women. This Himiko figure is an excellent sculpt from Khurasan miniatures depicting her holding up a branch, presumably as part of some shaman ritual. The female attendants, also from Khurasan, were modified by adding long hair to match the Queen.
The dotaku is being sounded by a converted Eureka brand Mound Builder figure.
Here is a photo from an auction site (Zacke.at) showing a Late Yayoi Dotaku:
The dotaku was made by cutting off part of a plastic house from the bits box. It was some kind of Spongebob thing? I don’t know. But it was the right shape and size. You can see it upside down on the left side of the photo.
The basic shape was then modified with Green Stuff to add flanges. The “ears” were made by pulling the Green Stuff out with a pair of tweezers.
References:
https://www.worldhistory.org/Queen_Himiko/