In Memory Of, On Wedding Programs How Can We Honor The Memory Of Family And Friends At Our Wedding?

How can we honor the memory of family and friends at our wedding? - in memory of, on wedding programs

My friend and I would have symbolized something physical in our marriage, family and friends who have died. We also have a few living members of the family is unable to be there. We thought anything with flowers, but that does not put her finger on what to choose, or, as is currently so you know what it is - maybe something written in the program. Has anyone seen or done?