This lesson is an opportunity for students to have fun converting their understanding of the technology into something in the real world. A whoopee cushion is a glorified button that can be made out of easily available materials.
This video from the Raspberry Pi Foundation has a very good description of how to make this project work.
The detailed instructions can be found here:
Our challenge is to make the audio files play using node red. You can follow the video and install this extra output node that is capable of playing audio files.
If you found success or didn’t, please post a response in the forum.