Haynes says that toothpaste has an exfoliating effect and can be used to get rid of coffee stains. Use an old toothbrush to brush toothpaste lightly into the fabric and then rinse. Just make sure the toothpaste you use is white.
Apply baby powder to the stain and let it sit for a few minutes. Then brush it off with a damp cloth, says Haynes.
This stain remover might surprise you, but many people swear by it. Beat an egg yolk and work into the coffee stain with a terry-cloth towel for about a minute. Rinse thoroughly with water, and the stain should be completely gone.