We often have Fever Tree Ginger Beer in our pantry.Ginger beer is pretty much the ultimate mixer IMO. You can mix it with vodka, bourbon, Irish whiskey, tequila(itry a Tijuana mule with good tequila/mezcal, fresh lime and Reeds or Q ginger beer).
I really like to have Vernors around but I only get stocked up on that when I'm in Colorado or further east.