The U.S. the government offers many free publications on just about everything imaginable. Want information on pet turtles, fleas on your pet, questions on child support, scams to get your money, American History, Gardening, you name it? Most of these are 1-4 page informational sheets and some have nominal fees (usually $1-$2). You can download pdf copies from the site. Could be of some value for say, teachers, parents, display in some public places, somebody with a flea-bitten dog…I don’t know.