When you give someone you really care about a gift, make sure it feels like you're giving them a piece of your heart. We assure you this heartfelt sentiment will be acknowledged and well-appreciated. It doesn't matter if you cook something for them, make something for them, or get them something that you know means a lot to them.
If the two of you are hanging out with your friends, make an effort for the person to feel included. If there's an inside joke, take the time to explain it to the person. If you guys are pulling each others' leg, and if the person is game for it, make a few jokes at his expense too just to make him feel included.