Send postcards that evoke the theme or locale of your wedding, instead of save-the-date cards, planner Yifat Oren says. If you're getting married at a resort or historic inn, inquire whether there are postcards of the site that you could buy or have for free. (Blank vintage cards, available online and at flea markets, make especially charming choices but cost a bit more.) Either handwrite the essentials on the back or use a laser printer.