Wendy's Gives Back with Frosty Coupon BookYou’ll love the current Hot Deals, sorry you missed this deal. Take advantage of this sweet deal on Wendy’s Frosty treats and help children in foster care! This fall when you purchase a $1 Halloween coupon book filled with free Jr. Frosty™ coupons ninety cents of every dollar will go to the Dave Thomas Foundation for Adoption® to help find loving families for children waiting in foster care. The Coupon Books are available for purchase now through Oct. 31. Coupons are redeemable November 2014 through February 2015.