Give caramel the eggnog treatment by spiking the chewy candies with brandy, nutmeg, allspice, and cloves.
Lightly spray bottom and sides of a 9-by-13-inch rimmed baking sheet with cooking spray. Line with parchment, leaving a 2-inch overhang on long sides; lightly spray parchment.
Bring cream, sugar, butter, and corn syrup to a boil in a medium saucepan over high, stirring until sugar has dissolved. Reduce heat to medium-high and cook, stirring occasionally, until mixture reads 248 degrees on a candy thermometer, about 13 minutes.
Remove from heat; stir in salt, brandy, and spices (it may splatter). Return to medium-high heat and cook until mixture reads 248 degrees on candy thermometer. Pour caramel into prepared baking sheet (do not scrape any browned bits off bottom of pan) and let stand, uncovered, at room temperature at least 8 hours and up to 1 day.
Using parchment overhang, transfer caramel to a large cutting board. Trim edges, then cut into 1/2-by-2-inch pieces; wrap each piece in waxed paper or foil candy wrappers. Caramels can be stored at room temperature up to 1 month.
Be sure to remove the pan from the heat before adding the brandy to avoid the risk of fire.