The newspaper typically has the most coupons that can be clipped. It's still the #1 source for clippable coupons.
Printable coupons for detergents like Tide can be found at the Printable Coupons blog, and at many coupon sites like Bargain Briana and Coupon Clippers.
In this page there are a lot of manufacturer coupons: http://www.stockpilingmoms.com/coupons/coupon-clippers/ Another resource for collecting coupons is available through purchase from a coupon clipping service. Instead of purchasing multiple papers for only 1 or 2 hot coupons that you want in large quantities you can order those coupons through a coupon clipping service. When you order from a coupon clipping service you are not paying for the coupon but for the time clipping it. You should never pay face value (or more) for a coupon. In general we prefer coupon clippers instead of Ebay.
One can find Papa Johns pizza coupons from: Retail Me Not, Deal Locker, Hot UK Deals, Southern Savers, Coupons, Krazy Coupon Lady, Smart Source, Coupon Network, Coupon Mom, The Coupon Clippers, Money Mailer, to name a few.
You can obtain a Rei coupon from their website. You can also find their coupons on a number of other coupon websites such as RetailMeNot and SlickDeals.
Couponology is a website that caters to savers and coupon clippers. Many different vendors can be found at Couponology including Hot Topic coupons. Each coupon includes instruction for redeeming them, as well as when they expire.
There is no information on how often JC Penney releases coupon codes, however, their coupons can be obtained from: Retail Me Not, Bargainist, Deal Locker, Savings, Coupons, to name a few.
You can either go through a purchase site like Coupon Clippers. Most sites that charge have a minimum purchase order. There are also many sites that have free printable coupons.
Dick's Sporting Goods frequently offers coupon codes for a percentage off your purchase and/or free shipping. These coupons may be obtained from many of the blogs that offer coupon codes on a regular basis.
Shoprite coupons can be obtained from a variety of sources. The stores own website, Facebook page and Twitter feed often features the coupons. Alternatively, try websites such as Krazy Coupon Lady and Retail Me Not.
There are many coupon sites available to the public online. One could search one of those sites to find FTD coupons. One could also look at the FTD website to find coupons.
Type words as "coupon" "footlocker coupons" you will get tons of websites with coupons.
You can find coupons for Colgate toothpaste online at coupon sites such as Retailmenot and Coupon Clipper. There are other coupon sites which have Colgate toothpaste coupons such as Valpak.