The prophet Isaiah talks about idols. I think it's always more powerful to use scripture for teaching and preaching.

(Isaiah 44:12-20 NIV) The blacksmith takes a tool and works with it in the coals; he shapes an idol with hammers, he forges it with the might of his arm. He gets hungry and loses his strength; he drinks no water and grows faint. {13} The carpenter measures with a line and makes an outline with a marker; he roughs it out with chisels and marks it with compasses. He shapes it in the form of man, of man in all his glory, that it may dwell in a shrine. {14} He cut down cedars, or perhaps took a cypress or oak. He let it grow among the trees of the forest, or planted a pine, and the rain made it grow. {15} It is man's fuel for burning; some of it he takes and warms himself, he kindles a fire and bakes bread. But he also fashions a god and worships it; he makes an idol and bows down to it. {16} Half of the wood he burns in the fire; over it he prepares his meal, he roasts his meat and eats his fill. He also warms himself and says, "Ah! I am warm; I see the fire." {17} From the rest he makes a god, his idol; he bows down to it and worships. He prays to it and says, "Save me; you are my god." {18} They know nothing, they understand nothing; their eyes are plastered over so they cannot see, and their minds closed so they cannot understand. {19} No one stops to think, no one has the knowledge or understanding to say, "Half of it I used for fuel; I even baked bread over its coals, I roasted meat and I ate. Shall I make a detestable thing from what is left? Shall I bow down to a block of wood?" {20} He feeds on ashes, a deluded heart misleads him; he cannot save himself, or say, "Is not this thing in my right hand a lie?"