What are /r/yokai's favorite Products & Services?

From 3.5 billion Reddit comments

I have a book called “The Book of Yōkai” it’s only not old it’s been released in 2015, by Michael Dylan Foster with (new) illustrations by Shinonome Kijin. In the beginning it’s more of an explanation on how Yōkai could be made up and after that it’s an encyclopaedia of different Yōkai all divided into sections based on where they live. Some of them are accompanied by drawings but they are made for the book, so it might not be what you’re looking for, but I implore you to check it out regardless.