The customer is always right. If she says her kid can handle it, the kid can handle it. Young kids like colors, appearances, vanishes, transformations, etc. A color changing liquid-clear water becomeing green, then red, etc-is good. Thumbtip work with colored silks, etc., would be good. Levitating things works well. Try to recall what fascinated you when you were young. What TV shows were your favorites, and why? You must have seen a magic act on Sesame Street, so which effects caught your eye most?