Stop by your local Wendy’s restaurant where you may be able to score their annual Halloween Boo! Book Coupon Booklet for just $1 each! Each booklet includes 5 coupons which are valid for one FREE Jr. Frosty with any purchase. YUM!
Note that these coupon booklets are typically not sold at all Wendy’s locations, so you may want to contact your local store before making a special trip.
Update for 2019: They sell them online now!