These are a few VERY local sources of deals I have found.
Orchard Market has a few printable coupons they change every quarter. Click on "download OM web coupons" at the top of the "specials" page. I'm a little bummed, because for the past year they've ALWAYS had a milk coupon, and usually an egg coupon. Those seem to be gone now, but I'll probably keep checking every week.
Our Family Foods which is Orchard Market's "store" brand has quite a few printable coupons, and they seem to change fairly frequently.
Leppinks also has some printable coupons, however, you have to register at their site, and their coupons are only good with an additional $20 purchase. I usually only shop at Leppinks if they're having a great Wacky Wednesday deal.
Other than Rite Aid and Walgreen's, Meijer and Orchard Market are my main two stores. I would love to check out D&W and Plumb's, but I just never seem to find the time to figure out the deals at either of them. I'm comfortable with my main two stores, and they're the closest to me. I'd love to hear if any of you find anything great elsewhere though!