There is Sound Oasis Sleep Therapy Pillow Speakers with volume control, thin stereo speakers that you place under your pillow to envelop your head with music or white noise from your digital device (from about $22 online), though when it comes to blocking noise, nothing can beat the Tranquil Moments Bedside Speaker & Sleep Sounds device from Brookstone ($99.99). It has got a dozen sound programmes (including “ocean surf” and “white rain”) and refined volume control that you can bump up bit by bit until you’ve masked the chatter of hotel room neighbours, voices in the hallway and, outrageously loud snoring from an adjacent room.