A wall call be decorate in a few ways. You can either do something on top of the wall, like a gallery wall with family photos, a themed gallery wall with prints or art, or just a collection of wall decor in a curated pattern. You can also keep the wall simple, but paint it an accent color. You can do a wall stencil or wallpaper, which is trendy again, or you can even do a wall in shiplap or board & batten for a three-dimensional look.