Check out this necklace--you wouldn't even notice from a distance, but those black "beads" at regular intervals are actually 3-amp diodes. Each lead of each diode is curled around a ring, shaped into a decorative "S" shape.

18" necklace with white chain that closes with a lobster clasp. Also comes with a 3" extension chain. Packaged in an anti-static bag on black foam.