In the Lord of the Rings, the One Ring corrupts the people near it, and it seems to have a stronger effect on anyone who sees it or touches it. Sauron and the Ring Wraiths also seem to be able to sense the One Ring when someone wears it.
Once the Council of Elrond decided to destroy it, why did they not take additional steps to help their people resist the temptation of the ring?
Put the ring into a small lockbox. Or, better yet, solidify molten metal around it. Do something so that the One Ring cannot be worn, seen, or touched without great difficulty. You can still cast the container into the Crack of Doom, and the ring would be destroyed along with it.
There are clear literary reasons for the lack of such preparations, but if there are in-story reasons not to take any such steps, I would like to know.