I seem to recall that some African tribes buried their dead in or near the home, where they worship and/or commune with their spirits for protection and advice. I think there are tribes in southeast asia that do the same or similar. Anyone have more info on this?
Ancestor veneration can be found here and there around the world. Sometimes it takes the form of prayers or entreaties to the dead ancestors, in pursuit of help or protection for the living. Madagascar’s traditions might be worth a look (although I’m not sure those are living traditions any more).