CVS, which boasts the largest rewards program in the U.S., is selling a GreenBagTag for 99 cents. Shoppers can attach the tag to a reusable bag and present it with the rewards card at check-out.
For every four plastic bags they don't use, they get a $1 "ExtraBuck" on their rewards program, to spend on anything in the store. The Woonsocket, R.I.-based retailer says it
currently has more than 62 million members in its ExtraCare program, which generates both quarterly and instant ExtraBucks rewards.