What do I get the groom?

I'm a floral designer, and one of my clients invited me to their wedding. I did all their wedding flowers, and I can't wait to see them during the wedding and reception. I'm going to be making a bouquet charm for the bride's bouquet, with their names and the date of the wedding. I'm stumped, though! What should I get the groom?? If anyone can help me with this, I'd be thankful.