Parenting is preparing kids for a dangerous world, and part of that is exposing them to moderate risks with limited real penalties. In the real world, there are people who do magic tricks, themselves believe the magic is real, and want your money.

My aim would be to keep it light and entertaining, so as to create a positive halo of solstice magic, and so that the positive memory doesn't go away with the knowledge that it was sleight of hand. In fact if I do my job as a rationalist parent, the holiday association is: entertainment+presents+learning+food