The tools we use are not neutral. A sword can be made to work like an axe, but we use axes for chopping wood because a sword makes a shitty axe. A sword is designed to kill people. The handle, the mass, the weight distribution, and every other aspect I am not qualified to get in to, means swords are designed to kill. They are a tool, and their use is not neutral.

This is a clear example, but I don't believe any tools are neutral. Your immediate fallback was to a hammer, not a mouse, with the obvious corrollary being to bludgeon, but the same line applies. Tools are not neutral, and that's why when you looked for something that causes harm, you grabbed something that's objectively been serving a dual-purpose for hundreds of years. Nobody's using a computer mouse to bludgeon someone to death; it makes a shitty bludgeon, and the design of the tool reflects that.

That's also why these comparisons always fall back to knives, or hammers, or the AK-47: they are dangerous tools that are designed to make killing easier. Nobody is making these comparisons to more benign tools, like desk lamps, coffee cups, or car stereos, and it's because tools are not neutral, and none of my examples are designed to make direct, bodily harm, easier.