It's not an inane question. If the state can outlaw something like owning sex toys, which affects no one and cases no problems, then they can outlaw anything. If you cannot see this, then you are blinded by your own parochial wants and desires.
If the "outlawing" doesn't violate the state constitution, of course they can. Doesn't mean they have to, but they can under the state police power.
The state has tremendous powers -- every power not specifically given to the federal government is retained by the states. Which was exactly how the Founding Fathers wanted it.