Steven had a school project where he had to create something to hold an egg so it wouldn't break when it was shot by a balloon launcher. he ended up using a small box and bubble wrapping the egg inside. It worked! His egg didn't break!
His box is in the middle of the picture (right below the ball), this is where it landed after being launched.
We filmed the wrong one, this isn't Steven's but it gives the idea of the balloon launcher.