The good thing about the book genres I will present you is that they are fast to create, in the zero-content and short-content style, require no previous knowledge, and people love them. The advantage, on the other side, is that a lot of authors and sellers prefer to avoid the Christmas niche, which is instead a treasure to discover.
Most of the books I will present you are good for adults, and others are good for kids. And some others can be done for one, and the other with a minimum change between the two versions.
Third thing, there’s a genre I’m sure you never heard that really need no text, just empty pages, and sells like crazy on Christmas and for Birthdays.
This is a gem like you have never seen before, a new way to present yourself in a lot of good niches, without losing time and money in research, and book creation by freelancers. You can do everything I show you on your own, with free tools.