mark lewis wrote:And fire should NEVER be used.
It pains me to have to disagree with you, but I was recently hired for a ninth birthday party specificially because I fire-eat. It is not part of my children's show, but it was that day. Anything is allowable if it is done right.
As for the Die Box, in the hands of someone who knows what he or she is doing, I can imagine it working with any audience. The problem is that most children's magicians take a prop like that and use no imagination. They just go through the motions. That is why I get turned off by props.