Rabbi Abahu said in the name of Rabbi Yochanan: `When God gave the Torah, no bird chirped, no fowl flew, no ox made a sound, angels did not fly, Seraphim did not say “Kadosh,” the sea did not stir, no creature spoke. The world was utterly silent–and a voice was heard: “I am the Lord your God.” (Midrash Shemot Rabbah, 29)
Gather the children (even adults) — Read the above midrash once through. Assign each child or person one of the “noises” — birds chirping, fowl flying, cows bleating, sheep bleating, rooster crowing, baby crying, ocean crashing, cat or dog making noise, snap of a twig, etc.
Then, reread the midrash having everyone in the group add sound effects. Repeat this until everyone is making his or her noise as loud as possible. Finally, count to three, and enjoy a full minute of silence. How does that sound?
Remind all that this is why, when the Torah is presented, the whole congregation and room is SILENT.