We spend a lot of time going in and out of our homes, so creating a functional and attractive transition space is well worth it. Before this mudroom addition, Kelly and Joe Armes's kitchen table and floor were always cluttered with backpacks and sporting equipment from their children, John and Annie. Now each family member has his or her own locker unit for drop-off and storage--one great idea in a space full of them. Follow Dallas designer Cindy Zelazny-Rodenhaver's tips to mudroom perfection.