I think shell buttons do qualify, again if they are not treated with anything. I agree, it doesn't make sense if something is non-toxic, blah, blah, why can't it be used? kittredgemercantile, crochet!! I am intrigued. btw--love your shop! :) I woke up at 2 am (with the toddler) and wondered about those fabric closures, aren't they called frogs? But They are all so big and bulky, I can't see them working on a child's outfit. But crochet buttons, that would work.
love the brainstorming!!