So I robbed this idea from a podcast.
The community is about reviewing business books. Not so much a book club, but a study club of reviewing a business book and then helping the community members apply to ideas to the business.
The members don't have to purchase the book to be a part of it.
Live video and then access to the owner or each other through the community.
One book per month. One business theme per month. Books are selected by member vote.
You monetize it by charging to be part of the community. You can probably charge a pretty decent fee if you can show results and increased revenue for your members.
It could be a low effort add on community for someone who is already a business coach or has a history of helping others build successful businesses.