What I do with a leftover ham bone: Make Split Pea Soup.
What a certain person I know, who will remain nameless, does with a leftover ham bone:
1 leftover ham bone (with a decent amount of meat still on it)
2 lbs. dried split green peas
5 qts. water
6 large carrots, chopped
1 large onion, chopped
3 garlic cloves, finely chopped
2 t. chicken bouillon or 2 cubes
1 t. dried oregano
1 T. fresh rosemary, chopped
Place the ham bone in a large stockpot and fill with 5 quarts of water. Bring to a boil, then simmer for about 1 hour. Reserving the broth, remove the ham bone from the pot using tongs, let cool enough to handle, then pull off all of the remaining meat that you can. Discard the bone and fatty pieces and reserve the meat. To the pot of broth, add the split peas and chicken bouillon. Let simmer for 1 hour covered. Then add the carrots, onion, garlic and spices. Simmer for another hour. Add the reserved ham and season with lots of salt and pepper.