What cocktails can I make with Campari, gin, Cinzano Vermouth Rosso, fernet, tonic, Gancia, Gancia Hibiscus, Borghetti, and Baileys?

Considering the ingredients you have on hand, it seems like the best match for a delightful cocktail would be the classic Negroni. All you need is gin, Campari, and red vermouth. The Negroni is a timeless Italian cocktail that's appreciated for its harmonious balance of flavors. This drink embodies a bold and bitter-sweet concoction, perfect for a sophisticated and refreshing experience. The herbal notes from the gin, coupled with the bitter and citrusy flavors of the Campari and the rich sweetness of the red vermouth, will create a complex and enjoyable taste. Garnishing it with an orange peel will add a zesty aroma, making it even more inviting.

Alternatively, you could explore the Americano if you're looking for something slightly lighter. This cocktail also calls for Campari and red vermouth, with a splash of soda water to add some carbonation. The Americano offers a refreshing and bitter-sweet flavor profile, ideal as an aperitif to stimulate the appetite before a meal.

Both of these options not only fit perfectly with what you have but also promise a delightful and authentic taste of Italian cocktail culture. Cheers!