When I was 15-years-old, I was fascinated by this experiment in high school, and I tried to repeat it, and I blew up the chemistry lab, and I produced a toxic cloud of cyanide gas-- which you can get out of these guys-- and that caused the evacuation of the entire building, with 200 students sitting outside on the lawn, in the middle of morning classes; it was deeply satisfactory. &amp;gt; 