Wedding ceremonies are not "traditional" anymore in this day and age anything goes and is always better when the bride and groom's personalities show forth!
When thinking about creating a unity ceremony, couples should begin with their interests. From there, you can develop a representative unity symbol based on the couples interests and loves.
For example, if you have a love of nature plant a tree during your ceremony at your ceremony site if your able or hang a tree house.
If you are a couple that has a love of water. Each of you can bring some water from your favorite lake or ocean and combine the water in a keepsake vase.
Look to your experiences and your values. Often, the unity ceremony will evolve from that. It will create a tradition that is unique to the two of you and engaging for your guests.
Happy Planning to you!
Till the next time