I found this on the Hammacher Schlemmer site — “The Always Cool Pillow”, $90. I’ve tried a cool pillow that was on sale at a certain drug store a while ago that but was disappointed in it– you had to fill it with water and listen to sloggying noises (not to mention getting your head smashed into it).
The Always Cool Pillow is described as using a “fabric developed for NASA” and is filled with fabric, so no filling it with H2O. Sounds promising. Anyone tried it?