Another use for a small electric motor - An Audio Speaker

I have just done a short series of videos testing some toy motors with a view to using them to power a toy helicopter. Although none of them had enough power the smallest one which came from an OralB vibrating toothbrush seemed to show the most promise. I then listed all the projects in which I had used that type of motor. Today I saw a video by Bruce Yeany and that gave me the idea for one more use of the motors.

Here is the link to Bruce Yeany video 'Homemade speaker made with a toy motor' https://youtu.be/p3jOMD0d5yE

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'Using vibrating toothbrush motors or similar https://www.youtube.com/playlist?list=PLA5a2xPRSrB3jAX4ymLvmoN8OtvQkKuTC

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