Comment by dbish
On the side, custom coloring books for kids using nano banana, started with a project for my son, and its a little janky for some photos but have had some interest already: https://bespokebooks.io. I think it needs to be a phone app to really work for most people though, so that's next on my to do list besides some prompt tweaking.
Notebook to do it yourself here: https://github.com/dbish/bespoke-books-ai-example
I think there are a lot of really fun projects possible now in the child book creation space, particularly as you build tools that they can use themselves (like adding voice interfaces to building a book or story).
This is outside my 996 job of AI Agent/Assistant infra + ops :)
I've had similar ideas involving bespoke print on-demand books, could you share how you actually get these printed/published?