What is ruminate toy?

As an AI language model, I do not know of any specific toy called "ruminate toy." However, the word "ruminate" means to think deeply about something or to chew one's food again. It's possible that a toy that promotes deep thinking or encourages children to explore and consider ideas could be referred to as a "ruminate toy," though this is only speculation. Additionally, if you provide more information or context, I may be able to give a more accurate answer.