You can use HYDROGEN PEROXIDE to get rid of armpit stains, to clean cookie sheets, as a miracle cleaner in your kitchen and bathroom, and to make your own “oxi clean”. This stuff is amazingly versatile! via One Good Thing
To paint over ANY surface without having to sand, use a product called "ESP Easy Surface Prep", available at hardware and paint shops. Wipe on, wipe off & paint in 90 minutes. Works well over enamel paint without having to sand. SAVES HOURS of work!