Seems to me that in that case, banning owning this hypothetical something would be redundant. Just use the laws that already ban doing whatever it is that they are doing.

Of course, your milage may vary. I also support repealing intoxicated driving laws, since I reason that reckless driving laws already cover that sort of behavior. For reasons that I don't really understand myself, people tend to think I'm off my rocker there too ;)