Most closets start their lives with a single shelf and rod. That leaves a lot of unused space leftover. If you break your closet into separate zones and stagger the rods and shelves at different heights, you’ll be able to accommodate a lot more stuff. You don’t need to dedicate five vertical feet to pants and shirts if they only take up 2½ feet. Move in more rods or shelves, and voilá—you've got double the space for double the stuff.