CVS has a new reusable bag program.  Buy a bag tag online in the store for $.99.  Put it around a reusable bag or even a plastic bag you are reusing and have the cashier scan it every time you shop.  After every 4th scan you will receive a $1 Extra Buck on your receipt. 

If you would like to purchase a CVS Reusable bag, print a $.50 coupon here.  Coupon expires 4/18