Baby Powder. This one is well known by now. Use a powder brush to brush small amounts of baby powder on the roots of your hair and voila, instant dry shampoo. It helps reduce the oil and smells good as well. Just don't dump a ton right on top of your hair or you'll have the powdered wig look.
Lansinoh Nipple Cream. I learned this trick from McMommy, it works as a great lip balm. Makes lips super smooth and shiny.
Monistat Chafing Relief Powder-Gel. This is making a buzz lately. It works as a great primer under makeup. Comes out of the tube like a gel and glides on to a powdery finish to keep shine at bay all day.
Static Guard. Spray onto your hair brush to help keep staticy hair in place.
Dryer Sheets. Rub them onto your brush, hair and clothes to keep static under control. One of my fave tips since I get such staticy hair in the Winter. Pro, it smells awesome.
What's your favorite beauty secret?