I called Chapstick and complimented them telling them how much my kiddos loved the Disney kind and they sent me 8 sticks for free! My friend called and they sent her 4 or 6...can't remember.
I do that too with the company coupons. Especially if you buy a product that doesnt work, many times they will mail you a refund for the product. Did that with a laundry stain remover and got the money back. I also only do one major shopping trip a month, then you arent spending money on that stuff you may pick up on impulse every week. I plan using the grocery store fliers, keeping in mind most products go on sale every 4-6 weeks I will try to save coupons till the item is on sale. Even on the weeks I dont do a major trip I will still stop in if there is a good sale on somethings we use often. I just stocked up on chicken parts after the store had the brand on sale for 40% off.