An interesting technique for inducing various experiences like LD, AP and OBE.
Actually the technique is very simple, you just need to:
Try to fall asleep while breathing through your mouth and focusing on sensation of the Air going In and Out of your throat, while laying on your back. /with closed eyes of course;)/
As a side effect you can get a SP.
This technique gives me an experience 50% of time if you able to fall asleep, which btw is the hardest part. Maybe you must try it when you are more tired.