The 25 year mark is getting to be quite rare in this day and age, so that's really reason enough to celebrate. The official theme for this year is silver. That's more like it, right? Cause there's sooo much you can do with this theme. Apart from the obvious choice of jewelry, the other gifts that you can present include silverware, engraved silver key chains or a ƈ and 5' days vacation at an exotic location (second honeymoon, why not).
You wouldn't forget the day you were getting married, so make it a point to celebrate the anniversary of that very special event each year. How you celebrate the anniversary depends on many factors. Can you find a babysitter? Can you book that favourite restaurant? If it's a surprise, will it be a welcome one?