Color it in
Hide the scratch by rubbing it with a little shoe polish of a matching color. Alternatively, try an eyebrow pencil—soft, oil-based, and brown colored—ideal for camouflaging anything from small surface scratches to deeper ones.
Fill it with crayon wax
If the scratch is deeper, raid your children’s wax crayon set. Grate part of a crayon into a small bowl; rest the bowl in a pan of boiling water to melt the wax, then drip the wax into the gouge, smoothing it with a flat knife. You can mix a color to match your wood by adding shavings from crayons of several colors.
Rub a walnut on it
Nut oils are perfect for repairing damaged wood. Rub a walnut kernel over a scratch to diminish it, or apply a little walnut oil with a soft cloth.