I print coupons as well online. 
 
This year I have started making my own laundry detergent (I have saved a TON) and I honestly think its BETTER than what it is in the store!  
Here's how I make it: 
1 bar of Fels-Naptha Laundry Soap
1 cup of Borax
1 cup of Arm and Hammer Super WASHING Soda (NOT baking soda) 
Grate the soap VERY fine and mix all together. This recipe will make 64 loads I think. You only need to use between 1/2-1 tablespoon per load. I usually use 1/2 unless I have a SUPER large or very soiled load and then I use closer to 1tbl. The only place I have found the Washing Soda is at Kroger (I had to call around) - they have all 3 ingredients but WalMart (and most other stores) carry the other 2 ingredients no problem. 

 And this is great for the energy efficient machines as well (b/c its not sudsy). I seriously think everyone should do it!