You can hang stockings with string underneath the shelf. And like any mantel, you need some art above it—this gold-framed chalkboard brings festive sparkle to the space. You can also make some “candlesticks” from washi tape for another whimsical accent. To finish, hang a mirror or piece of art above the “mantel” to ground the space. Stack wood in the middle of the “fireplace” and decorate with your favorite accents. Here, a DIY snowflake marquee is the centerpiece with some smaller festive pieces around it.