Noise cues for lucid dreaming

Here's an interesting YouTube video: 7 Hours, 53 minutes of Vacuum Cleaner Sounds (white noise):

YouTube - 7 Hours, 53 minutes of Vacuum Cleaner Sounds

It could be possible to use this as an aid to inducing LDs. You could set up a playlist with two videos - this vacuum cleaner one, and then one with a specific sound (music, for example). The aim would be to play the vacuum cleaner video when you go to sleep, and at the 7 hours 53 mins point, your next video on your playlist plays and this acts as a lucid cue.

We could also make some YouTube videos specifically for lucid dreaming: a video with 6/7 hours of silence followed by a repeated message (such as, "realise you're dreaming").