When a cake recipe calls for flouring the baking tin, use a bit of dry cake mix instead and there won't be any white mess on the outside of the cake.
Wrap celery in aluminium foil when putting in the refrigerator and it will keep for weeks.
Cure for headaches: take a lime, cut it in half and rub it on your forehead. The throbbing will go away.
Don't throw out all that leftover wine. Freeze into ice cubes for future use in casseroles and sauces. (leftover wine?)