There is definitely some good stuff here (and in the previous post). I am doing this on Sunday afternoon, so I am hoping to augment and optimize my idea of what the observance would be like.
We are playing the event "out of time" since the death happened in the 2nd session of this young campaign (in a venerable setting), the recovery of the body in the 4th session and the funeral in the 5th session, near the beginning of the session, though in deference to the other players, I "fast-forwarded" to a month later (the other players let me know what their characters are doing during that time) and told them that the funeral would be role-played before the next session (the 6th, on Sunday) with just myself and the two players present. So, the characters can stay up to a month, with the heart of the rites taking up to a week.
About the deceased: To add to the background already given, he was a young adult in elven years, training to be a Wizard and just finished with 20 years of study at the academy, which he entered as an adolescent. His name was Nym. His sister is a Druid named Aria and his older brother, who returned home to lead the recovery of the body and exact vengeance on said evil priest, is a priest of Correlan Larethian named Shea. Their father did not want Shea to follow the path to the priesthood and Nym was his favorite of the two boys, though the softest spot in his heart has always been reserved for Aria. The father does not know that his beloved wife summoned the elder son home to recover the body and dole out retribution, but is going to find out Shea has returned when he bears the body home.
--- warning---
graphic description follows
About the body: The CE priest smashed Nym's head with a heavy mace while the brave Wizard performed a holding action which allowed his sister, Aria, to escape the encounter alive (not to mention the rest of the party). He died instantly, then his body was ritually mutilated by the priest and torn to pieces. The priest's Orc servants and his Ogre enforcer were allowed the choicest parts before the remains were dumped into the underground pit that served as their refuse dump. Shea arrived about a week later and recovered the body (though the priest escaped with the assistance of a Contingency spell) and slew the Orcs and Ogre (with Aria's help, along with the rest of her party).
Metagame: Nym was the PC belonging to the player who is now running Shea. The player made a heroic sacrifice of the character when a TPK was looming. The Paladin was dead and the Fighter down, so the Wizard waded into melee (out of spells) to buy time for the rest to escape. It worked and this funeral is my reward to the player (who always grows fond of his characters) for his selfless act to save the party from a TPK. I want to provide the player, as well as the player who runs Aria, with a special, memorable experience.
Thanks for the suggestions! Keep 'em coming!
DM