I had lucid dreams in the past, it was a technique that professed to allowing you to have out of body experiences. All you have to do is make sure every part of your body is relaxed, I mean you consciously relax every toe, foot, ankle, shin, thigh etc all the way up your body to your head, including your eyelids (make sure your not squinting, or shutting them too tightly) then count to 10 and then back to 1, then count to 9 and back down to 1, then to 8 and back down to 1 etc. counting slower each time and concentrate on your breathing and continue until you realise you are no longer conscious of your body i.e. can no longer feel it! you will slowly drift of to sleep yet are aware you're falling to sleep. You can then try to turn the dream to your will. It's a form of self hypnosis (Auto-hypnosis), you can even give yourself a few hypnotic suggestions, i.e. to give up smoking!
Anyway my list:-
Alcohol - bad, very bad but I like to get hammered once in a while
Pot/Hashish/Marijuana whatever you wish to call it - When I was a student, every w/end, less regularly now
Amphetamines/speed - used rarely in the past during my student days
LSD/Trips - on the odd occassion, when I couldn't get hold of any Pot.
Tobacco - every day for 17 years (apart from 3 weeks in hospital)
A lot of the bad press some drugs get is they say, cannabis leads to other harder drugs. This is only because someone who is likely to break the law to sell Cannabis is also likely to sell so called harder drugs, if they have no Cannabis when you call, they are likely to offer you something else that they have in stock, something that could be more addictive. Same happened to me a couple of times anyway. I had the good sense to refuse but some of my associates weren't so discernng. Last time a saw them they were living on the streets hooked on heroin. Very sad.