This is a funny project. I've placed an Arduino Nano inside a Darth Vader head. When it detects sounds for 3-4 seconds and then a pause it starts talking using the quotes from the Star Wars films.
A Darth Vader that talks to you, saying phrases from the films.
The blog post with more info in italian is here: https://www.barattalo.it/making/dart-fener-parlante-arduino-nano-df-player-mini-mp3/ you can download the code here https://www.barattalo.it/wp-content/uploads/2019/09/darth-fener.zip