The samurai helmet is a classic Japanese origami pattern, folded for centuries. I've shrunk the folds down to small enough to make earrings, starting with square sheets of silver barely 1 1/2 inches across. They are then kiln fired, highly polished, and attached to ear wires.
Each tiny helmet weighs about 1.5 grams, and is just over 1/2 inch across. The ear wires are sterling silver.