Jacob's first birthday present

I know Christmas is coming up and we should be thinking about what to get Jacob for that, but we've been thinking more about his first birthday. He's such a good baby, but his personality is coming out more and more and he's very independent and starting to show us he thinks he's the boss. We aren't really a fan of this mindset, so we've been trying to decide what will help him learn things like patience, sharing, being gentle and listening. We decided either a pet or a sibling would be the best thing to get him. Come April, we'll hopefully (fingers crossed) be moving, so we can move somewhere that they'll let us have a pet if we want, and that'll be right around his first birthday. But, as we thought about it more and more, we decided a sibling would be a better option than a pet - it'll live longer, doesn't shed as much, can wear a diaper and will teach Jacob more lessons than a pet (because, honestly, we don't want Jacob sharing toys with a pet). So we're planning on getting a baby boy on April 28th - we kind of hoping we'll get him sooner, like April 9th, then Jacob will have to learn how to share his birthday. Because, remember, this is all for Jacob :)