kids shows can be a nightmare thats why i suggest you carry your gear around in a cool bag with a zipper.
you can say stuff like a cool mage carrys cool trick around in a cool bag and i even have special cool fir so don't use regular fire you will get burnt and thats certainly not cool, get all the links or as billy crystal would say, did you see what i did there.

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the bag allows you to get one trick out at a time and stops prying eyes and little hands also you can hold it out in front of you and push your crowd back withought being accused of touching them.
i like to say as I'm easing them back, come on give yourselves some room or you wont be able to see the magic, also remember that its ok to pause if there getting to close and tell them to move back.
or to tell them that if they start grabbing you won't carry on because you have alreay been paid and can happily stand around and do nothing, if you havant got paid in advance for kids work then you are a bigger fool than i am and i wear a cape, a silly hat and everything.