I am trying to find what seeds/plants among all out there have uses other than to grow decorative plants. I know vanilla seeds can be used in cooking to make chocolate and that another type of seed is used to grown a plant that makes orange leaves which, when eaten, helps to defend against poison. Another type of seed can be used to grow a plant that makes red leaves which can be used on books to make it not possible to edit the books' content. What other seeds/plants also have uses other than decorative ? Thanks.