Waiting Wonder is a modular immersive waiting experience designed to transform pediatric waiting rooms of different sizes into spaces of curiosity, comfort, and engagement. Through responsive projections, motion-sensor interactions, and layered sound design, children are encouraged to explore, play, and learn through movement and discovery rather than passive distraction. The acoustic environment is carefully considered at every scale — combining sound-absorbing materials that reduce overstimulation with calming spatial soundscapes that create a softer, more emotionally supportive atmosphere for children and their families.