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?
Iβve only ever really used cotton pillow cases and cotton stuffed pillows. I recently upgraded to a foam pillow that Iβm enjoying.
Surly there exists some artificial material that perfectly mimics the properties without degrading.
Maybe ceramic pellets could work as well surly it would help both sides of the pillow be cold.
Iβd always prefer a biodegradable and renewable material that I have to replace every few years over an artificial one thatβll be around forever in some form. Not everything needs to be made out of petroleum