Usually when I dream lucidly I don't think about it too deeply during the dream, but the night before last I did.
I was in a largish lobby of a building on the Moon, where someone who looked like Carl Sagan was explaining what we were doing there. He was referring to a video on a wall screen, but not many of those present paid attention to him, and I was bored by it too. Being aware I was dreaming, I decided to walk around the loose crowd and talk to people. I tried jumping to see if I'd go high, but the first time didn't work. The second time I willed that my dream be a little more accurate to being on the Moon, so I got much higher. That was enough. Realizing that all the faces I saw were ones my own mind had created, I started to wonder why I made them the way they were. Then I went into a corner near a couple of elevators and some couches and noted that the crowd was racially segregated. Most of the black people in the room were on a particular couple of couches that were facing each other. Then I looked at the next couch and noticed that the people were segregated by age too. I figured out that I must have been "painting" the people sequentially, and that the simplest thing to do was to do so by category, so that ones close to each other as I encountered them would look similar to each other.
Then I got bored and struck up a conversation with a young lady, explaining to her that as a figure in my dream she was in my control, which she didn't seem to mind but found interesting. We went out the nearest exit -- no need for the building to be on the Moon any longer if I didn't want it to be -- and onto a plaza. The lady complimented me on my architectural taste as she looked around at the buildings I'd populated the area with. That was it.