Now that the present giving season is basically over.. don't forget that handy parents can lower the volume of a lot of kids toys by simply adding a resistor inline to the internal speaker. Here's a picture of me performing a volumectomy of my own. In this case, 68Ω did the trick.
Useful for everyone comfortable with a soldering iron. Maybe a solution for some of those #ActuallyAustistic care givers out there too.