My 3 year old goes to an extra thing that we pay for at his daycare called Soccer Shots, that he loves the snot out of. More or less every single night of the week he asks, "Do I have Soccer Shots tomorrow?" and then gets really sad if the answer is no. But if it's Tuesday, then the answer is yes, and the world is a magnificent place to be! I wouldn't make a special trip to take him to the same kind of thing, but since he's already there, and its not that much money, we figure we might as well.
We can't take him to either of his brother's games or practices because he is constantly trying to run out onto the field to play. Or if he's not doing that he is asking "Why can't I play soccer on the field?" Sometimes either I'll kick the ball around with him for a while, or he'll find somebody's brother or sister that will, but its not the same thing as being out on the field. And I can't do it during Boy 2's games, cause I'm the coach.
The little guy is both left footed, and only uses his hand to stop (trap in soccer parlance) the ball about 15% of the time, so I know that he is going to be really good.