I bought two of these for my two elementary-age grandsons, one for each.  Their birthdays are close together so I gave the fountains at the same time.  The birthday presents  are on their back deck and the whole family is enjoying them.   You know how children love to play in water; and there's no danger from electricity.  You do have to emphasize that ceramic is breakable so they don't get too energetic with the rocks.   

Pros: Good price.  Good Product.