So, I used to do this a lot when I was growing up, like I am sure most of you do. I also do it to get inspiration should I ever need to start work with no prompt or to get limbered up to draw. There are three family younglings that visited me a while ago and they all gave me a different scribble line to start with and then I would draw what I imagine.
This is that black and white doodle from the other day, all colored in! I want to eventually make an adult coloring book, maybe this could be one of the pages? Just a thought!