I've never been a good sleeper so I was intrigued by the Dreamate, which is described as a "watch-like unit that uses natural biofeedback technique to rebuild the biological clock and train the wearer to relax and sleep." The Dreamate uses accupressure to stimulate the "sleeping golden triangle" (on the wrist!) which is supposed to bring on deeper, more restful sleep. Some users have said they were able to sleep for up to 55 minutes longer after falling asleep with a Dreamate. The only problem is the "gentle wave" it emits is kind of bumpy and noisy. My golden triangle was pretty annoyed. At $79.99, it didn't seem worth the risk, but I remain curious.
Available from Hivox.