Jeff, I agree--but presumably, if, as Tpaine said, it is unconstitutional to pass a law banning the sale of dildos, there must be some text in the constitution that supports this.
If you claim it is "unenumerated," I'll point you to my above post, #112 and ask you the same question--where do you draw the line? And how do you rationally and logically draw it?
So by your logic a state could ban sex between married adults and it would be perfectly constitutional.