I have whiskey, vodka, Guinness, lemonade, milk, coffee liqueur, and soda water. What drinks can I make?

You've got a versatile set of ingredients, and there are a couple of interesting cocktails you can make based on what you have on hand.

For starters, you could try making the Irish Russian. This cocktail combines your whiskey, vodka, and Guinness with coffee liqueur and cola. While cola isn't exactly listed in your ingredients, you might experiment by substituting the soda water and a touch of the lemonade to get a similar fizzy sweetness. The blend of coffee liqueur, vodka, and Guinness will give you a rich, smooth drink with a hint of chocolatey flavor.

Another excellent option is the White Irishman. This cocktail uses coffee liqueur and whiskey, and although it traditionally calls for half-and-half, you can certainly use the milk you have on hand as a substitute. The combination of coffee liqueur, whiskey, and milk stirred over ice results in a creamy, flavorful cocktail reminiscent of a White Russian but with the distinct, deeper notes of whiskey.

These two drinks leverage your existing ingredients quite well and offer unique and delicious flavors. The Irish Russian stands out if you enjoy a more complex, chocolatey drink, while the White Irishman provides a creamy and smooth alternative. Enjoy your cocktail crafting!