Although this is created to be used around valentines day, I think this activity could be transferred to other boxes of candies to broaden is usability. This is a good way to reinforce the concept of switches and closed circuits.
Use this demonstration for Webelos Scientist activity badge requirement 1: Read Bernoulli’s principle. Show how it works. In the Webelos handbook, Bernoulli’s principle is stated as: The pressure of a moving gas decreases as its speed increases. This demonstration could also be done in conjunction with the Science Belt Loop and Pin from the Cub Scout Academics and Sports program as part of a discussion of the scientific method or a science experiment.