Wendy’s is now offering its 2016 Halloween coupon books. For $1, get a booklet of 5 coupons — each for a FREE Jr. Frosty. The coupons are valid from Nov. 1 through Feb. 1, 2017. The best part is that 85-cents of every book sold benefits the Dave Thomas Foundation for Adoption. I The best part is that 85 cents of every book sold benefits the Dave Thomas Foundation for Adoption. It might be a good idea for frugal families to consider buying a few for their own use on those days when the kids need an after-school or weekend treat. The coupon books are available for purchase at participating locations through Halloween, Oct. 31, or while supplies last.