If 2020 doesn’t exactly have you in the holiday mood, why not indulge in a little bit of a throwback this season with a mid-century modern Christmas tree? What’s that? You don’t have an aluminum tree, boxes of pristine vintage ornaments, and family heirlooms on hand? Not to worry. There are plenty of ways to bring the stylish spirit of 1950s, ’60s, and ’70s right into your living room without all those fancy accoutrements.