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.
They come with a big thick zip up cover, if that’s the kinda thing you’re looking for. I don’t really remember noticing any powder on mine when I got it, but it’s entirely possible I just didn’t notice.