Video demo: https://www.youtube.com/watch?v=0z7QJxZWFQg
The first time I talked with AI santa and it responded with a joke I was HOOKED. The fun/nonsense doesn't click until you try it yourself. What's even more exciting is you can build it yourself:
libpeer: https://github.com/sepfy/libpeer
pion: https://github.com/pion/webrtc
Then go do all your fun logic in your Pion server. Connect to any Voice AI provider, or roll your own via Open Source. Anything is possible.
If you have questions or hit any roadblocks I would love to help you. I have lots of hardware snippets on my GitHub: https://github.com/sean-der.
Somehow this device fits well with the Don't be a sucker video linked to elsewhere on this here site [1]. Good advice, valid in many contexts. Don't.
Perhaps a parent commitment that if the kids earn X many goodie (goody?) points, then the CC is charged, and let the parent control how they earn those X points.
Gamifying good behavior has been shown to be pretty effective with kids. See Kadzin.