One of the best lessons that was taught to Jacob, in my opinion, was teaching him to hug. He's been hugging ever since. I just need to ask him to hug me and he will oblige. Never mind if he's just doing it to follow "orders" but getting a hug from him is just a wonderful treat.
He doesn't just hug with his arms. His hug, which he also does when told to "love" someone, includes resting his head on wherever he is hugging you. So when he is told to "love" Papa, he hugs me with his arms and head. This just makes my day. Every night, before he goes to sleep, I always make sure to "order" him to give me a lot of hugs. And these make everything better no matter how my day went.