During lucid dreaming, the dreamer may be able to exert some degree of control over the dream characters, narrative, and environment.
The dreamer’s ability to be aware that he is dreaming is central to both the Tibetan Buddhist practice of dream Yoga, and the ancient Indian Hindu practice of Yoga nidra.
The cultivation of such Awareness was common practice among early Buddhists.
Fly across the mountains, time travel, meet famous celebrities, talk to long lost relatives, face your fears, star in a movie.
Play an instrument you have never played. be good at things you do not know how to do, experiment with thought control.
Become an animal, live on another planet, see the Earth from space, relive memories and experiences, change the weather, make things explode with your mind, slow down time.
Explore the mind or another dream character, create some art, make a friend in the dream, be your favourite superhero, explore the ocean and breathe underwater.