At the end of the year of mourning, Jews in North America have the custom of a stone-setting or unveiling ceremony. This is an opportunity to remember the person who died and give a sense of closure to the year of mourning. Since there is no liturgy for this ritual, it's a good opportunity for people to share memories in whatever way makes sense to them--through set prayer, like El Malei Rachamim and kaddish, or traditional eulogy, or by sharing recorded music the person liked, or photos of them.
The Guide to Death and Mourning for Interfaith Families is also available as a downloadable PDF and Word document.