When sending off departing friends or colleagues, point out the void they'll leave in your world: "Now who will I call and ask for directions when I'm lost?" A woman from San Francisco arranges a themed gift for colleagues moving to a new area: a subscription to The New Yorker if the move is to Manhattan, flip-flops and sunscreen for warmer climates, like Florida. When a friend or a coworker relocates to her city, she assembles a notebook listing the area's best restaurants, doctors, florists, and hairstylists and presents it with a toast at a welcome party.