Sure. Here is one: 'The Little Star. A little star was lonely in the sky. One night, it made a wish. It wished to be friends with the moon. And then, its wish came true.'
Love could be one theme. Maybe a story about a mother's love for her baby animal. Another theme might be discovery, like a little boy exploring a magical garden.
They are usually simple. For example, they might focus on one small event like a princess meeting a little animal. They also end quickly, often with the princess going to sleep or feeling calm, so kids can fall asleep easily.
The humor in them is often based on unexpected twists. In the mouse superhero story, the mouse thinks it can fly but ends up with a different 'power'. It's this kind of sudden change that makes kids laugh. And they are short so that kids don't lose interest before falling asleep.
A very short bedtime story is usually simple. It often has a basic plot with a few characters, like a little mouse and a big cat. And it has a quick resolution.