Just found this one today: ClickCallMail-- it has Publix/ General Mills coupons (the Publix ones are pdf)-- I think the $1/2 Muir Glen coupon will be a nice matchup for the manufacturer's coupon I have. Now, where was it??
Cooking with Kraft-- Kraft/Publix coupons-- my favorite is the "SAVE $1.00 on Publix® Produce when you buy OSCAR MAYER Deli Fresh Chicken Breast Strips or Cuts (6 oz. or larger)" I used this one a few weeks ago to get a pkg of 6ct donuts for $1.47 (& bought the meat). There is also one for $1/2 Kraft shredded cheeses with a touch of Philidelphia. Kraft cheeses are B1G1 starting Thursday (Wed. for some), so I hope these are included.
In Stores Now @ Walmart-- this is a great place to sign up for free samples and print various coupons (not all are restricted to Walmart). Right now there are a handful of printable coupons including Crystal Light & Glade Expressions. You can also sign up to see if you qualify for a free Life Choice bar.
Pillsbury/General Mills-- many Pillsbury and GM printable manufacturer's coupons without store limitations
Facebook-- there are literally TONS of printable coupons on company's respective facebook sites. Just type in "facebook" in the coupon database for an exhaustive list.