Here’s a full list of religious (and belief system and non-belief system) emblems allowed on US goverment headstones. This list has not yet been updated to include the recently-approved Wiccan pentacle.
I especially like the groovy looking emblem shown here, for the Eckankar religion, which was founded in 1964. It makes me think the government should also approve the old EC logo for dead die-hard comics fans.
