In the copyright-adjacent space, there's the concept of something having no substantial non-infringement-supporting use. It's a judgment call, of course, and certainly it's abused... but that seems like what people are angling for: making it illegal to sell things which have no legal use.

I can come up with a few legal uses for this, though. Not many, and I doubt the primary use of this thing is legal. But it means any law would have to involve some kind of balancing test.

I remember people trying to make various open source software illegal under this kind of argument. Debuggers, tool suites, and so on. Because obviously only evil hackers used them, and open source development was a negligible fringe activity.