Before painting galvanized metal or concrete, wipe down the object or surface with vinegar, using a sponge or lint-free cloth. This little trick will help your paint job last longer. (Not that you would want to paint galvanized metal!
DIY: You can paint fabric with Cece Caldwell paints. There is no icky “crunchy” feel that you get when you paint fabric with latex, after paint dries, you can just wipe with a damp sponge, smooths the paint out, and you have a brand new look.