Playing with fire(crackers)…BlockBusters

If you were to play with firecrackers to cause a small controlled explosion for a block busting spell… what would it be?
I am thinking of a pumpkin or an apple…maybe a box. Curious what your creative ideas are!

(A block busting spell is for when you have any obstacles, in life or related to other magickal workings, and you literally want to bust them, like they would do with dynamite when building trains)(and no dont worry, Im not trying to get hurt! I only use small ones that can be ignited from afar in my backyard)

You can use gunpowder too, with very small quantities of course (and in a fire proof place outdoors!). Many of rituals in Quimbanda uses gunpowder to symbolize power and drastic changes that the spell or ritual wants to create.