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 use down feather pillows, they are easily customizable but they can go "flat" and hard in the middle of the night. Putting your head down on a freshly fluffed one is utterly sublime, though.
I have fallen in love with bamboo rayon pillowcases, (aka modal, aka tencel, aka lyocell). They can be extremely soft and smooth like silk but are much hardier, so you can wash them like normal laundry.
I used to love down pillows until I learned they're the reason why my allergy got so bad.
Maybe I should give buckwheat a try, or shredded latex. I'm probably due for a change but lately I haven't been able to afford any sleep disruption.
Where did you get your bamboo rayon pillow cases?
Most of mine came from a vendor called Pure Beech that was exclusive to Bed, Bath and Beyond. They are the 100% modal sateen that seems to have been a consumer favorite that doesn't seem to be available anywhere. I have another set from Bedsure in their 100% bamboo that has a similar feel though.