There's quite no use of bones at the moment in the game, however that's excellent food source in survival conditions - I believe survivor should be able to cook a soup, especially when hot dish is essential in winter time. So I'd suggest to introduce such an option and recipe would be:
A pot
Bones
Water
Heat source
Adding vegetables (potato/pepper/zucchini/pumpkin) would increase the value of a food and add more value to growing them in game. By the way, it would be great to grow carrots too.