Adult necklace and infant teething devices are disclosed that among other things have the appearance of small pieces that if they were as appeared might pose a choking hazard if disassembled but are actually made of larger pieces—modular units—that do not pose a choking hazard if separated from the necklace. In this way, the wearer may look fashionable but also have a safe teething device ready for an infant to use while being held by the wearer. Other aspects are disclosed.
