Two things that are VERY much alike in Star Wars and Willow are the Willow fairies and the fairie-like “Wisties” from Star Wars EU.
A “Wistie” from the movie Caravan of Courage: An Ewok Adventure
(Go to 59:00 minutes)
https://www.youtube.com/watch?v=SghKMwhak-A
Willow Fairies:
https://www.youtube.com/watch?v=Wfdh0BRBWFg
George Lucas was writer and executive producer of Caravan of Courage in 1984.