CVS has an advisory panel that they ask advice of from time to time. It consists of a group of CVS shoppers who are somewhat familiar with CVS and their products. The surveys sent are not too often, complicated or long and you are rewarded with ECB for completing them!
You must be a CVS Extracare Card holder to join. It is free to get a CVS card and you can apply at any CVS. The last time I completed a survey for the advisory panel I was given $10 ECB. I think the survey took 15 minutes of my time. That’s a pretty good payoff! To receive your “payment,” just scan your card at the magic coupon machine in any CVS and watch it print!