Our one year old has been playing enthusiastically with an empty pop can for 2 weeks now, so I think I'll get a six pack.
He just had his birthday recently, and got spoiled rotten, so we're not going to bother too much this year. No doubt his grandparents will, so he's covered.
In the future, we won't be so cheap that that we'll combine his Christmas and birthday gifts. My wife grew up like that, and can't bear to treat him the same.