I created a sample children’s book as a challenge to myself.
It took me about two and a half hours. It actually would have taken less, but a lot of the assets I found were really large. I discovered that when I resized them to a significant amount in Captivate (shrinking by 75% or more), the resolution got really messed up. So I ended up resizing in Inkscape, a free graphics program, and then adding them to the project.
There are a few things I would change for next time. I would double check audio levels to make sure they are all similar. I think they’re close in this project, but would require a little more adjusting. Also, a few of the sounds I chose I no longer like (in particular, the pig).