The picture I linked is of a buckwheat pillow. Had no idea they were a thing before today.
What about silk or bamboo pillow cases?
I’ve only ever really used cotton pillow cases and cotton stuffed pillows. I recently upgraded to a foam pillow that I’m enjoying.
I sleep on a buckwheat pillow. It’s pretty decent, and as a bonus it guarantees victory and the extermination of your enemies in every pillow fight!