I like this idea. Speaking as a man that chews the end of his pencil incessantly, I think these could take off. As an added bonus, combined with edible drawing paper they could be a great solution to the problem of children’s art. If you don’t really want to have entire walls of your house covered in your child’s “art” but also don’t want to stifle their artistic output at such a young age, why not let them express themselves and then feed it to them. Two birds. One stone.