He built a box, and she painted their last initial and their wedding date on it. They put in two unread love letters to each other about why they fell in love, a nice bottle of wine from the year they started dating, and nailed the lid on the box. They promised that if things ever get too hard and their love starts to fade, they will open the box, drink the wine, and read the letters they wrote to each other, reminding them of how much their love means and to never give up.
Give your bridesmaids planner with all of the important wedding dates in them: when to order their dress, bridal shower, rehearsal, etc. Also put in each other's contact info and all the locations to events. Pretty smart.