One important money saver is the pantry. If you do not have a physical pantry make room some where to start building one. You must stock up on the everyday items you use when they are on sale. It will save you money and time.
I have three pantries in my house. The pantry in my kitchen full of canned goods, etc. My baking Pantry by the oven so everything is in one spot, and then the pantry in the basement (This is the overflow pantry) Now of course I realize not everyone has the ability to have three pantry's but what about under the bed? Or in the garage on shelves? If you want to save a lot of money find the room for extra items.
Also, don't forget that your freezer and refridgerator are considered pantries as well.