All the same of these gadgets, the most practical and necessary is whiskey stones. Because few people pour whiskey into a decanter, they usually leave it in bottles. In addition, the varieties of whiskey stones a great many. You knew that not all of them are stones. Some are made of steel. And there are even stones in the form of bullets. You can read more about this here: https://hellocoolstuff.com/best-whiskey-stones/