I've built the slideshows for several funerals, sort of telling the person's life story, and putting it to music they loved. After, everyone shares stories about the person, how they knew them, how they met, or when they fell in love, funny stuff they did at work, you name it.

Uncle on my wife's side started a service for her grandpa by suddenly throwing a stack of pots and pans he'd hidden behind the casket, on the floor (scared the crap out of half the audience). This had special meaning for the uncle and his siblings, because that's how grandpa would wake them up for school some mornings if they didn't get up on time.

Stuff like that. Work in what was important to him. Who was important to him. What he did for a living, if he loved his work. We spend a quarter of our lives or more at work, and those people are often important parts of our lives too.