Here's a great laughter-maker for your kid shows!
You hand a child spectator a large magic wand. When they take it, you still have a wand in your hand! Ask them to please hold onto this second wand as well - and ANOTHER wand remains in your hand! This happens again and again until the poor child is holding a wand in each hand, under each arm, under their chin and perhaps even between their knees! This is all in good fun, and even the child volunteer will enjoy being part of the act! The child takes a huge bow and earns loud applause for their participation in this laugh-building moment!