I came across these lovely illustrations recently by Rilla Alexander. This year she launched an illustrated children's book called Her Idea. It's not just a beautifully drawn children's book, the story seems to be inspired by more mature experiences such as procrastination and struggling to finish things you start, with the main character Sozi perhaps representing the author and her journey to getting the book published.
The book has pretty much been developed into a full brand, with toys, screenprints and figurines to accompany the book. I really like the simplicity of the character designs and use of colour. Check out this video made to showcase the launch: