On October 30th and 31st, all Halloween items will be on sale for $2.00! For extra savings, you could even get on https://www.oldnavyweekly.com/ and print off an extra coupon. Just click around until one pops up, or keep looking for a better one.
New coupons reset on Thursday nights… usually around 7:00. You may want to wait until then to print your coupon for the Friday and Saturday sale.