This is pretty tangential to the topic at hand, but I remember that innocent time, many years ago, when we went to the drug store and basically asked for all the ingredients you'd need to make a small bomb. When the teller heard the list, she frowned and asked, "So are you gonna make a bomb or what?" We grinned and said, "Of course!" Then she smiled and proceeded to hand us all the ingredients. We used it to make small squibs for a film project we had. Worked beautifully. Of course, had we done this today, we'd probably be sitting in some marathon questioning session at the closest police station.