So, when items that you use go on sale, try to buy what you will need that will last for the next 5-6 weeks.  For example...Last week, I bought 5 bags of Lays chips at Harris Teeter because they were on sale Buy 2, get 3 Free.  The total purchase before tax was $8.85 making each bag of chips cost me only $1.77.  If I was to buy them at regular price for the next 5 weeks, it would cost me a little over $22.  So, I saved over $13 over the course of the next 5 weeks on chips (something my husband can't be without!).

The only thing that would have made this transaction even better is if I would have had coupons for the chips.  Then, I could have gotten them for cheaper than $1.77 a bag. 

My advice is, stock up on sale items and try to use coupons in conjunction with the sales as well to get the rock-bottom price!  If you get to know the sale cycles of the stores you love, you will be pocketing lots of extra cash for your family!