I'm answering the important questions.
https://www.youtube.com/watch?v=6Ea6jf-9Czo
How much thrust does a ceiling fan produce?

YouTube
@TechConnectify That is more than thrust of many spacecraft thrusters!
@jajcus ...except those also work in a vacuum ...

@SvenGeier @jajcus they work in a vacuum by spewing non-vacuum out the back.

If you spew non-vacuum at a fan in a vacuum, it'll probably also work.