This how-to video describes how to make a fairly simple hydrochloric acid bomb. The bomb that is made in this video does not have an extremely large blast radius, but it can still cause damage. This particular hydrochloric acid bomb is contained in a bottle and will explode due to the chemical reaction between clorhidric acid and aluminum. All that is needed to make the bomb is the clorhidric acid, aluminum, and a bottle.
A viewer of this video would learn how to quickly make a hydrochloric acid bomb powerful enough to blow up a water bottle. Viewer beware, all bombs are dangerous, but this bomb will only wield a rather small blast radius.