The most popular designs are either tent folded so they stand easily - you simply write your guest name on the front and their table name/number inside, or a card tucked into a miniature envelope with the guest's name written on the outside.
You can make a pretty display with escort cards by arranging them on a table in rows separated by flowers or by hanging or pegging them over a length of ribbon.
These save the normal crush at the table plan and also let your wedding planner or a bridesmaid make any adjustments that may be needed on the day.
Displaying the escort cards hanging from a ‘tree’ (or multiple trees) is stunning:
Wishing rocks are an alternative idea, simply place a rock on, or near, each escort card, along with a sign instructing guests to make a wish for the couple on their respective rock and then place it in a large vase. After the wedding you can keep it at home, a container filled with good wishes: