What can I make if I have dark rum, white rum, aged rum, vodka, Cointreau, triple sec, Scotch, Armagnac, Velvet Falernum, Coke, seltzer, club soda, tonic water, ginger ale, lemonade, mango juice, ice, gin, and Apple Jack brandy?

Given your extensive selection of spirits and mixers, you have several delightful options for making cocktails from the list provided. Here are a few top suggestions that match the ingredients you have on hand:

Dark 'n' Stormy - This classic cocktail combines the rich taste of dark rum with the fiery kick of ginger beer, and a tangy refreshing twist from lime. Although you don't have ginger beer, you can substitute it with ginger ale for a similar flavor profile. Simply mix dark rum (60ml) with ginger ale (approx. 100ml) and a squeeze of lime, served in a Highball glass.

Rum Buck - Another excellent choice that highlights both dark and white rum. Mix together Cointreau (15ml), white rum (30ml), lemon juice (7.5ml), and top it off with ginger ale (120ml). Serve it in a brandy glass, and you’ve got a balanced, refreshing cocktail with a kick of ginger ale’s spiciness.

Rum Punch - You can make a vibrant Rum Punch using your overproof, white, or dark rum. Mix lime juice (22.5ml) with sugar syrup (45ml), a dash of Angostura bitters if available, and 67.5ml of your chosen rum. Shake well with ice and serve in a highball glass.

Each of these options makes excellent use of the rich flavors of your dark and white rums while pairing perfectly with the mixers you have on hand, making them easy and satisfying choices for your next cocktail session.