Be sure to "Like" companies on FaceBook. Companies often do giveaways for free samples and full sized products. They also offer higher value coupons, normally with limited prints so you have to be quick. The companies can do this at their pleasure at any time. Plus, don't just Like companies, Like stores for specials and coupons as well.
Next, after you "Like" them on FaceBook find the companies websites and sign up for emails. You will also get emails with recipes and sometimes more coupons. If you like a company and they are not offering coupons, do not hesitate to call or email them asking for coupons. Tell them how much you like their products and leave your address in the email. You might be surprised with what shows up from them. Don't be afraid to tell them what you don't like. I did a review for 5 Hour Energy from Smiley 360 (send us your email for a direct link to sign up) and had a bad review and they called me to personally talk to me about my experience to see what went wrong so they could fix the problem. I only drank half the bottle and they wanted the rest of the bottle back. They sent me a self addressed envelope to mail it back so they could do their test to see what was wrong.