Some 70 years ago, my father clipped out a recipe that became a family regular, essentially potted ham (although his recipe called for SPAM).
Grind together (today, I use a food processor) ham, cheddar cheese, hard boiled egg, onion, raw celery, raw carrot, dill pickle, sweet pickle.
Bind with mayo. Add mustard if you like. And/or dill.
I use this with many leftover big-meats, beef and pork. Works less well with poultry, IMHO. Use as sandwich spread or on crackers. Kids tend to wolf it. Men, too.