Bookcases as Discreet Absorbers and Barriers
Load bookcases with dense books and place them against the shared wall, leaving a tiny gap to reduce vibration coupling. Stagger spines and add fabric baskets for mixed absorption. This movable mass thickens the boundary without fasteners, and the varied depths scatter reflections. Pair with a plush rug and curtain to create a cozy, quiet corner where bedtime feels inviting.