To paint over ANY surface, without sanding, use a product called 'ESP Easy Surface Prep', available at hardware and paint shops. Wipe on, wipe off and paint in 90 minutes. Works well over enamel paint , without having to sand. SAVES HOURS of work. It was recommended to me by a professional painter.
Drain Unclogger: Pour 1/2 cup baking soda and then 1/2 cup of vinegar. Cover up the drain during the crazy chemical reaction. Wait 15 mins and pour a pot of boiling water. It totally clears up the clogged drain caused by my long hair and it's easier on the pipes than Drano. Works every time!!