Herringbone Slat Floating Shelf Accent Unit How to Make Creating a herringbone-patterned slatted backboard elevates standard floating shelves into a geometric art piece that doubles as storage. Cut sixteen small pine slats at forty-five-degree angles on both ends using a miter saw. Lay the slats out in a tight V-shaped herringbone pattern onto a thin plywood backing board, securing each piece with waterproof wood glue and finishing nails. Trim the outer edges flush to form a clean rectangle, then mount two thick floating shelf planks horizontally across the herringbone pattern using heavy-duty bracket pins. Apply a honey-oak stain to highlight the contrasting wood grain angles. Hang the unit above a soaking tub to hold bath essentials, scented candles, and small decorative stone trays, turning a blank wall into an eye-catching focal point.