Slatted Bamboo Niche Insert Shelf Unit How to Create Transforming an existing wall alcove or recessed niche with a slatted bamboo lining creates a custom built-in floating shelf display. Measure the interior dimensions of your bathroom wall niche accurately. Cut lightweight bamboo slats to match the back wall width, adhering them horizontally from top to bottom using construction adhesive. Install two thick glass or clear acrylic floating shelves inside the niche, securing them with subtle side-mounted brass brackets over the bamboo slats. The transparent shelf material allows light to pass through, highlighting the rich texture of the bamboo backing. Style the illuminated alcove shelves with white ceramic cups, sea sponges, and decorative bath accessories to achieve a clean, spa-inspired aesthetic that maximizes recessed space.