"During your precious Saturday hours, an organized, fully stocked broom closet will save you time, motivate you, and remind you what you need to do," says Cheryl Mendelson, author of Home Comforts ($35, www.amazon.com). If you don't have a whole closet to devote to cleaning supplies, part of a pantry, a nook under the staircase, or a corner of a room will work, too.