Show Him Who You Are
Of course, not everything should be about your boy. It's just as important to show him who you are and let him in on your interests. If you frequently play poker with friends, bring him to a game and teach him how to play. If you love American history, educate him about the Founding Fathers and take him to nearby historical landmarks (history is everywhere, so you should be able to find places of interest no matter where you live). We can't promise he's going to grow up to be a professional poker player or a historian -- or even take an interest in your hobbies -- but you'll both enjoy spending quality time together.