I think it's time for another science experiment, don't you? Yes, you do. You are getting very sleepy.
You know those little fizzy eggs? You dump them in the bathtub or the sink or whatever and it fizzes away to reveal there's a little toy in the middle? Well, today we're going to learn how to make one. An Angry Birds figurine will be used as the toy. You need baking soda and water for this, and perhaps an oven (if using an oven, get a parent). They use vinegar to dissolve the egg.
And it's really very simple. Get a bowl, put some baking soda in it, add water to make the baking soda mushy and moldable, and then just mold it around the toy. Then dry it out.
Show them what that looks like, random cute kids.