My frugal tip is to stretch your milk. Instead of 1% I buy 2%. When I open a new gallon I pour a quart of it into a pitcher. Then I add a cup of water to the pitcher and fill the gallon the rest of the way (slowly!). There is no taste difference, minimal nutrition difference and it saves us 2 to 3 gallons a month!
[Kacie posted this tip to the Readers’ Tips box. It originally appeared as a comment in The Complete Tightwad Gazette giveaway.]