Tom's of Maine: wrote to them about how I am happy to drive out of my way for Tom's fluoride-free toothpaste for my daughter, but that I accidentally bought fully-fluoridated toothpaste last time and I was just inquiring regarding product availability locally. I made a point of being very complimentary as I am VERY loyal to Tom's for toothpaste for my kid in particular. I asked also for any Qs or promos that they can put me on their mailing list. Within 4 days, I received a full tube of children's fluoride-free toothpaste.
Lansinoh: same deal, complimented them, asked for Qs as I prepare to become a milk machine in the next few months. Within 4 days I received a sample pack of breast pads, nipple creams, breastmilk storage bags, cloth wipes.
Eucerin: complimented them on their Q10 cream (my FAVORITE and only cream I put on my face-if you've seen my complexion lately, this may make you very afraid of the product, but I assure you it'd be even scarier if not for this product!), asked for Qs. Received three $2 off Qs expiring 12-10-09.
Stoneyfield Farms: received $5 worth of Qs within a week
Eggland's Best: we've been loyal to these eggs for about 3 years (exception: occasionally I'll buy the Meijer brand equivalent, but with Qs, Egglands are cheaper), I just wrote them complimenting their philosophy and their product. I received one $0.50 coupon. yipee-skippy, I only have about 40 of these already. only good thing is that this Q has no expiration date.
Amy's: received email back stating they will be mailing me some coupons.
Kashi and LUVS: nothing received to date.
I have a long list of more companies / products to try and am keeping track of the savings. These coupons came at no cost to me as I just wrote a simple, quick email in each case.