What Professional Organizers Say You Shouldn't Throw Away

Whether personalized napkins from a New Year's Eve party five years ago, or plates with your son's face on them for his second birthday party, leftover party supplies—especially anything in the "servingware" category—can come in handy. Tova Weinstock, who runs an organizing company in Brooklyn, says, "You ordered them, and they were expensive. So get over the weirdness. It's a napkin. Just use it." (Cocktail-sized ones are actually perfect for lunchboxes.)