Take a look inside the official Amazon Echo-compatible Big Mouth Billy Bass singing fish toy, which works wirelessly with Alexa. See what makes it tick and learn some tips for hacking your own.
Echo-Compatible Billy Bass (on Amazon, now discontinued)
https://amzn.to/2rqVEq1
Here's the toolkit I used to open it up:
iFixit Essential Electronics Toolkit (for TR10 security bit)
https://amzn.to/2QfeXkY
Here's the Instructable on getting started with hacking your Billy Bass to work with any audio input:
https://www.instructables.com/id/Animate-a-Billy-Bass-Mouth-With-Any-Audio-Source/
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