id:ИМЯ ПРЕДМЕТА}

/summon Giant ~ ~ ~ {Equipment:[{id:ИМЯ ПРЕДМЕТА},{},{},{},{}],CustomName:Dinnerbone,Attributes:[{Name:generic.followRange,Base:0},{Name:generic.knockbackResistance,Base:1}],ActiveEffects:[{Id:14,Amplifier:1,Duration:999999,Ambient:1}],NoAI:1}