Sesame Street 1st Birthday Ultimate Birthday Box Birthday in a Box Party Kits 1st Birthday Party Kits > Ultimate Party Kits Throw your baby the ultimate Sesame Street party with our Sesame Street 1st Birthday Ultimate Box. Our Sesame Street 1st Birthday Ultimate Party Box includes everything you need to throw the perfect party for your little one and 7 guests! Contents include full tableware for 8, a variety of Sesame Street 1st Birthday decorations, birthday candles, and fun items for your guests as well as for the birthday child.