GameRegistry.registerCustomItemStack("bagCotton", new ItemStack(cottonBag, 1, 0));
boneBag = new BoneBag("bone").setUnlocalizedName("boneBag");
GameRegistry.registerItem(boneBag, "boneBag");
GameRegistry.registerCustomItemStack("bagBone", new ItemStack(boneBag, 1, 0));
netherBerryItem = new NetherBerryItem(1).setUnlocalizedName("berry.nether");
GameRegistry.registerItem(netherBerryItem, "berry.nether");
GameRegistry.registerCustomItemStack("berryBlight", new ItemStack(netherBerryItem, 1, 0));
GameRegistry.registerCustomItemStack("berryDusk", new ItemStack(netherBerryItem, 1, 1));
GameRegistry.registerCustomItemStack("berrySky", new ItemStack(netherBerryItem, 1, 2));
GameRegistry.registerCustomItemStack("berrySting", new ItemStack(netherBerryItem, 1, 3));