Newspaper is a good substrate. It's not the prettiest thing in the world, but it is certainly functional.
Stay away from colored ink (especially RED!), as the ink can contain different ingredients/chemicals. The black ink is typically soy based, so it shouldn't pose a risk. (I've worked in the newspaper biz for a number of years now..)
I would be more concerned about that desert snow stuff. I'm not sure what it is, but it appears to be absorbent. That stuff sounds like an impaction nightmare waiting to happen. (I must say that I have only seen pictures, I have never felt it)