There is a $10 P&G coupon book in certain packages of Duracell Batteries ($3.49) at Publix! Here's a list of coupons found inside:
$1/1 Duracell CopperTop Batteries (4pk or larger AA or AAA or any size C,D,9V or Duracell Ultra 4 pk or larger)
$1/1 Tide Detergent (any size)
$7/1 Crest Whitestrips Advanced Seal (14 count)
$1/1 Charmin (any size)
update: Amanda at One Momma Saving Money at let us know that she found these batteries on an endcap in Target on clearance for $6.88! And they all had the P&G coupon book inside of the packages.