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There’s a new ray of hope for troubled sleepers: the NightWave sleep assistant, which employs a pulsating light to help users catch their z’s. As the light slows, so should the user’s breathing, allowing him or her to relax and doze off faster. Unlike medication, the NightWave is non-habit-forming, and it won’t disturb sleeping companions like a sound machine can. Best of all for road warriors, the travel size weighs in at less than a pound and is the size of a deck of cards, so it’s easy to throw into a carry-on. $50 to $60, www.nightwave.com