Breathing Induced MILD ("B-MILD")
This idea is simple. I read it in one self-hypnosis book, and it gave me two (semi-)lucid dreams in one night.
Before sleep you repeat the mantra of your choice, synchronizing it with your breathing. For example, I said "Every dream of mine" during breathing in and "is lucid" (in Russian, of course) during breathing out. You must repeat it not less than three times. You can repeat during the day.
About that night: isn't it cool to say to Jock Ewing "My name is [insert your name here]. I can't explain, but I will be living at your place."?
P. S. It seems to me that any affirmation may be subliminalled this way.