Free iphone app: baby shusher. All it does is make the 'shhhhhhhhhh' noise over and over again. As she is coming out of a catnap, I just put on the shusher and let it go. It hasn't failed me yet. I shush her (myself) in the night, and she just drifts back off although I do have to catch her quite quickly as she's coming out or I lose her. I'm developing cat-like reflexes whenever I hear the first signs of wakey snuffling, because mummy doesn't feel like playing at 5am.