Ok first off all, many genius people have most of their ideas derived from their subconscious, they say that ideas just came to them out of nowhere, or were inspired by dreams. These peoples subconscious are assumed to be over active and threw the ideas at them.

In normal wakeing life, your actions and thoughts come mostily from your consious, and go into your subconscious once attention is taken off of the the subject to make room for more ideas in your consious, so your thoughts arnt cluttered. I think of the subconscious as a giant storage facility, its so big though that ideas, memorizes cant really be found at will, but once and a while somthing comes up (ex: a old memory.) One way to access your subconscious would be hypnotism, people have been known to recall memorizes and intricate details of somthing they didnt even take notice of in there conscious through hypnotism because it taps into thier subconscious.

Now for my point, (sorry for the long prepost) dreams are a manifestation of your subconscious, and when you become lucid your conscious becomes active also. Now you are able to utilize both your subconscious, and conscious such as genius can do. Could you not recall memorizes from years ago? Could you not say "theres going to be a paper with a poem written on it accross the room" as you would do to spawn a person. Your subconscious would have written that poem if there is words on it right? Could you do the same thing and spawn designs? A theme park layout? Anything... could Lucid dreaming be used to tap into the genius of your subconscious and completily change your life..