I am planning on starting to try DEILD more seriously, and have run into the problem of actually waking up after a dream. I have heard that one way to train myself to do this is have something wake me up, but have it shut itself off so I don't move too much to stop it. My phone will vibrate until the cows come home, my watch easily takes 3 minutes to stop ringing after the alarm.

Can anyone give me the name of something I can use to wake myself up, but not be forced to move to deactivate? Something that vibrates will be my best bet, I live with some VERY light sleepers.