I’ve read through all of your suggestions and I agree that Smoke Rings are a must. But I just don’t know about the other three science experiments. Elephant’s Toothpaste has been suggested and the Disappearing Ink demo using a fire extinguisher is also on the top of the list. To help me better decide, I asked our customer service team and the great people in our distribution center for their input. Here’s what they had to say… watch the video!