Throwing a birthday party, whether it's for a kid who's one year old or a kid who's 45, can be a major undertaking. There are all sorts of things to buy, from decorations and tableware, to invitations and giveaways for the attendees. Oh, and don't forget the gifts. As the name might give away, Birthday in a Box has all of these things, and more — all shipped out in a convenient box. Party-throwers just pick what they need for their party, checkout and have the whole thing delivered to their door.