Birthday balloons in a box. Make some ones birthday even more special with lovely birthday balloons in a box from the Balloonking. We have birthday balloons to suit all tastes and lots of designs to choose from, like the "Big White Birthday Cake" balloon. Also the amusing "Fudge Sundae" birthday balloon. Order your balloon in a box online and have it delivered on the day of your choice. Whether you choose the big "Star Cluster" birthday balloon, or funny "Grim Reaper" birthday balloons, it's sure to make the day extra special. Send a beautiful birthday balloon in a box surprise today!