You planned your outfit for tonight so well, but you didn't have that in mind when you ordered that red wine or tomato soup. If you spill something on your clothes while you're out and about, don't panic. Your night doesn't have to be ruined as long as you have club soda around.
Used straight from the bottle, club soda is a great emergency spot cleaner and stain remover. Apply it with a clean, damp cloth.
If you're near a laundry machine -- say, a romantic dinner at home? -- you can create a simple but powerful stain remover by combining lemon juice with cream of tartar. Wash it like normal, and those marks you thought would be there forever will be long gone.