This is a nice trick but the quality of the item unfortunately suffers. This is a great trick for
kids and they probably won't figure it out if you perform it right. I find it works well that
instead of making them vanish from the box, I do the secret without them seeing and pretend to dump
them into to little bag. Then I show the box empty so they assume they are all in the bag. That way
I can make them vanish from the bag and I can clearly show it empty after.