 Save your wooden table with these kitchen items. The oils and walnuts work wonders to hide scratches. Just take the nut, rub it on the scratch, then wait a few minutes for the oils to fill it in. Mayo, yes mayonnaise, can be used to make water stains disappear. Plop some mayo on top of the stain and let it sit for an hour or two. And voila! Good as new. Vinegar also works to remove water stains on your wood. Just take a towel, soak it in some vinegar, then dab, dab, dab all over the stain.