This one came to me yesterday on my way home at lunch. I’ve written the first 200ish words, but I don’t yet have a satisfactory ending.
Everyone in the entire world sleeps a deep, 24-hour sleep, and experiences the same dream. When they awaken, night has been banished forever. Someone or something has turned the Earth inside-out, placing a small sunlike body at the center of the hollow sphere. What comes next? Guess I’ll find out as I write.