I have one made with flaxseed. still stinks, but different.there is some advantage to them, but can't recall what it is. make a slipcover for them. easy to wash.
if you have an arthritic cat or dog, they love a rice bag in their sleeping quarters. warm up your tootsie toesy area of the bed before climbing in. had not thought of an extra layer to slip your hands into--great idea !
Merry Christmas to everyone !!!!