The idols that cannot be smashed with a hammer or burnt in a Bonfire of Vanities are the ones that do not properly exist as physical objects. Even the smashable ones still exist as mental objects in our minds, after they have been destroyed or before their creation. Woe to the god-makers! Woe to the craftsmen! Woe to the silversmiths of Ephesus! When the Apostle Paul was passing through Ephesus with the sword of the Word in his mouth, the local devotees of the goddess Artemis did not like what he had to say on the matter. He caused a riot.
The idol of self is the hardest to destroy because it is what makes relational worship possible in the first place. That cleaving of soul and spirit, joint and marrow, is what makes the ladder of divine ascent accessible to us. Don't worship the ladder!