Re-sable ice pack?
Any suggestions for a good re-usable ice pack, something granular that will stay that way even fresh out of the freezer? Please, no frozen veggies or similar--they go bad. . .when you forget them on the couch!
I was thinking of freezing pea gravel or smooth aquarium gravel in a heavy, heavy ziplock, with a little water with some alcohol mixed in to keep the water frozen slushy.
Any other suggestions, commercial or home-made?