These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Crazy Awesome: Sirius really likes Stuff Blowing Up. In ch 6, he even breaks into a civilian demolitions company's warehouse to steal sixteen canisters of nitroglycerine, which he later uses to destroy a horcrux.
Ginny: How many of these do you think it will take?