The Tranquility Pod at Hammacher Schlemmmer. $30,000. This pod uses sound, vibration, and soothing light to relax. The pod blocks 90% of outside noise, while the subwoofer generates gentle vibration through the bed. The biofeedback system synchronizes your heart rate with LEDs in the pod’s inner perimeter to create ambient mood lighting. Ultra-suede-topped, memory foam cushion that covers an octagonal waterbed which is temperature controlled (85-90° F).