Dreams.

I dreamt that I built the world's first flying machine. It looked like Saint George from "Dragon Hunters" (which, in turn, borrows heavily from Da Vinci's helicopter), but its propeller was in the front, not on top – like on World War II fighters. My brother and I flew in South America, around numerous coastal islands, often landing on them and exploring. Many of the islands were completely bare, with only some vegetation, while others had dwellings, people, and all sorts of interesting things in a medieval setting. The feeling of flying and exploring was simply amazing.