Here is one that I’ve batted around in my head for years after visiting the Bonaventure Cemetery in Savannah, Georgia, US. Family members could join a web site affiliated with a cemetery where their loved ones or ancestors were buried. For a fee, they would financially support maintaining the site and could purchase flowers to be put on the grave however often and when they wished. Photos of the grave would be updated regularly. The site could also be used to research ancestry/genealogy.