Water Rings on Wood: Water rings on a wooden table or counter are the result of moisture that is trapped under the topcoat, but not the finish. Try applying toothpaste or mayonnaise to a damp cloth and rub into the ring. Once the ring is removed, buff the entire wood surface. Window Cleaner: Mix 2 teaspoons of white vinegar with 1 liter (qt) warm water. Use crumpled newspaper or cotton cloth to clean. Don’t clean windows if the sun is on them, or if they are warm, or streaks will show on drying. The All-Purpose Cleaner (above) also works well on windows.. There are PLENTY more for those household hackers out there. Non-Toxic Home Cleaning – [EarthEasy]