I love science tricks and magic tricks, especially for the little ones.
God put us here to make folks smile. When you are dead, and pulled up that tunnel to your judgment, I have read that they ask you, "How did YOU make use of the time I gave you on Earth, to make MY world a better place???!!!"
I think that these little things will help, because they shock and amaze the little ones, and make them smile.
Buy a roll of Wintergreen Lifesavers ,
and the take one of them into a closet with two pairs if pliers, and after your eyes have become accustomed to the dark, snap the life saver in half with the pliers.
You will see them throw off light.