Kmart has decided to double coupons with a face value of up to $2 tomorrow, 10/31 only! You’ll be able to double up to 5 coupons with a $25 purchase. No more than 4 like coupons will be doubled per transaction. You will need a Shop Your Way rewards card in order for your coupons to be doubled. This is good at participating stores only.
Go here for more information.