If you haven't already included it, maybe music would be the most appropriate. Music seems to be a part of all religions and it can certainly touch the hearts of those present. It would also inspire memories of your loved ones if it was some of their favorite songs. If the site is remote, perhaps a guitar, recorded music or an acapella singer could most easily be arranged.

Perhaps just music and some reading from "Another Dawn" would be all you need. I also love those memorials where everyone gets to speak about their memories of the loved one. The memorial can be such a comfort.

I am so sorry for you profound loss and I will pray for you this moment.
smile