What can I make with rum, bourbon, vodka, Baileys, Kahlua, triple sec, ginger ale, coconut rum, grape juice, various bitters, club soda, and simple syrup? I'd like something a little sweet, but not overly sweet.

You're in luck! Based on what you have on hand, there are some great cocktails you can make that hit the sweet spot of being a little sweet but not overly so. One cocktail that stands out is the Bourbon Highball. With just whiskey (bourbon) and ginger ale, this cocktail is straightforward to make and refreshingly simple. It combines the zingy and slightly bubbly flavor of ginger ale with the rich notes of bourbon, making it a delightful choice for those who prefer their drinks to have a balanced sweetness without being too sugary.

Additionally, the Key West Cooler could be an excellent choice if you prefer a more vibrant and fruity cocktail. This drink combines coconut rum, vodka, peach schnapps, orange juice, cranberry juice, and melon liqueur, resulting in a multi-layered and flavorful experience. The mix of tropical and summery flavors will offer just the right amount of sweetness, balanced by the tartness of the juices.

Here's a quick rundown of these cocktails:

• Bourbon Highball: Mix whiskey (bourbon) with ginger ale and serve in a wine glass.
• Key West Cooler: Combine 15ml coconut rum, 15ml vodka, 15ml peach schnapps, 22.5ml orange juice, 22.5ml cranberry juice, and 15ml melon liqueur in a highball glass. Shake and enjoy!

With these choices, you'll be able to enjoy a drink that's nicely balanced, flavorful, and perfectly suited for your preference for something a little sweet but not overly so.