I love the idea of healthy art. This is kinda cool and there are no limits to what can be made out of these things. You can make the patterns like you see. Try drawing things in pencil on the papers for the kids to try and follow.
I am ALL about giving kids direction, and the tools to make something super artsy like this! Kind of a co-art project, with best part being the quality time spent together, and artwork to remember it. <3