If your local market has a reward card then sign up for their emails too. I get lots that way. I also get them from the sites of the brands I use the most.
Also, our local library has a coupon exchange bin. You can put in what you don't use and take what you can use. If they don't have one see if they would start.
I really don't like many of the on-line coupon sites. Some of our local markets don't except them plus you have to download their "special" software that is loaded with spyware.