“Let’s have lunch after the holidays,” is about to become your professional refrain. Indeed, from Thanksgiving straight on through New Year’s, your social calendar is booked. From dinner at the in-laws’ to swanky Penthouse cocktails to a weekend at your best friend’s ski cabin, you’ll be wearing lots of hats—and delivering lots of presents to your hosts. Here, an assortment of favorites to ensure you’ll be invited back.