I found this awesome mod called the My Peoples mod, which lets you clone things, including yourself! You have to get your blood, then turn it into DNA, then turn that into a human egg. Then you can use that and make a clone of yourself, or any other person you want. The clone can farm, mine, attack, and destroy forests. It is really cool. You can also have two clones attack each other. You can give and take XP from the clone and it will even automatically eat food it picks up to replenish hunger/health. It's really cool. It would be an awesome companion on an exploring trip, or you can set one to work chopping down an entire forest!