I wonder if you could use lucid dreaming for experiencing events in your past again, like meet a dead grandfather who died when you were very young, who you can't really visualize rigth now, but whose face you know must be in your head somewhere still, voice, scent, all of it.

Or how about something like this: I know what a giraffe looks like enough to recognize one when I see it, but I couldn't draw it. But what if I went and found a giraffe in a lucid dream, and memorized what it looked like, could I then draw it in real life? (and I probably could do that if I went and saw a real one, observed it for awhile, and drew it later. I could probably do that)

So I dunno, just some thoughts. Anybody done anything like this?