Most of my chickens are those antibiotic free types so I like to use their bones to make stock.
Use all the bones, add onion ( leave skin on, just cut into half or quarters), garlic, carrot, celery, bay leaves, salt and pepper corns (and any other spice you think you'd like), cover barely with water put the stock pot in the oven set it for about 180F- 200F, do not let it boil, and leave it there for 12 hours or more is better, what ever. When you get a chance drain everything off, bottle the liquid and freeze. None of the veggies need to be cut up very much.