Grouping objects in threes creates rhythm by introducing varied sizes, shapes, or colors that lead the eye smoothly through a space. Unlike symmetrical pairs, trios avoid predictability and feel dynamic yet balanced, much like a musical rhythm. For instance, three decorative vases arranged staggeredly on a shelf add natural movement and focus. This repeated motif helps unify different areas in a room, making it feel cohesive and alive. Rhythm inspired by the rule of three enhances calmness and intentionality in everyday living spaces.