Most of our editors agree that the three-ring binder is the best way to stay organized. We like this sleek binder by M.O. Inc., with its finger pulls for easy access, but love the ingenious accessory options: pocket dividers, writing pads and stick-on pockets for business cards. We added the always essential notebook, a highlighter/Post-it flag combo for marking books and magazines and the adhesive strips that make any oddly shaped thing—fabric swatches, torn-out magazine pages—instantly binder compatible.
Wedding Planner notebook, $75, smythson.com. Post-it Flag Highlighter, $5, staples.com. Cardinal "Hold It" strips, $5.50 for 25, shoplet.com. Signature Binder, $15; Pocket Dividers, $8 for 5; Ruled Writing Pads, $13 for 2; Blank Index Tabs, $8 for 12; Business Card Pockets, $5 for 5; all by M.O. Inc., yourmo.com.