I have found that this effect always is a big hit with KIDS OF ALL AGES. It is one of those effects that can be performed in front of the watching parents and they also will be entertained. I believe that if you want repeat bookings for birthday parties the effects you choose should include items that the parents of attending children will want to talk about with their respective partners when they get home. (The effect involves a TT)

That is interesting. How do you present this trick to the kids and what is their reaction?