For example, deliberately overloading a CAD and having it explode might cause damage (a la exploding tricorder, but the DoSAT's gonna hate you more). Mixing Bleeprin and Pink/Purple Stuff causes an explosion and can probably be used as a makeshift Molotov cocktail (Bleeprin is not canon in HPverse). You may attempt to use an Embryo Extraction Kit to relieve someone of their vital organs... disgusting but possibly effective.

I don't know of any weapons actually invented by the PPC which wouldn't fit into HPverse. The Canon Cannon is PPC technology, but HPverse does have normal cannons, and that wouldn't be uncanonical.

From what I understand, the PPC takes just about everything from other continua. After all, who needs to make something if it's already made for you? All you need to do is find somone who has what you want, take it from them, wipe their memories (with another stolen device) and run away. My assumption is that nothing is actually made by the PPC, just stolen and modified.

Just my thoughts on the subject.