Re: What was the thriftiest decision or change your family made?
The single thriftiest thing is couponing. It's not just specifically the coupons themselves, but the whole strategic shopping concept. It has forced me to really pay attention to how to get the best deal. Of course the coupons themselves are great too...I go free grapefruit last week by combining the grapefruit coupon with the sale on it.
And tied with that is DH learning to do our car repairs himself.