Gel Ice Packs Has Anyone Made Their Own Gel Ice Packs? Do They Work?

Has anyone made their own gel ice packs? Do they work? - gel ice packs

Yes, I have and do the work. Fill with equal parts of water and alcohol, what ever size reverse ZIP LOCK halfway again. I had some problems with leaks, double-bag, so that both parties to the business back into the pockets that had to buy their own double-seal.