You can assemble your necklace in many different ways. We attached a clasp to one end of a chain, then threaded the bare end through the locket and attached it to the USB drive with a jump ring.

To open a jump ring, grasp it with two pairs of pliers, one on each side of the crack, and torque/twist it open. To close, grasp each wire end with pliers and twist it back shut.

This USB drive also came with a small cord and gold lanyard with a clasp, which can also be used for this project! When we assembled it this way, sometimes the locket had a hard time closing around the squishy cord.