Jelly Beads / Ben Wa balls
Ben Wa balls are a sex toy usually worn vaginally and consisting of one or more balls attached to a retrieval cord. They are inserted for everyday wear or masturbation and can provide stimulation through movement, weight, and friction. Depending on the model, they may also be used for pelvic floor training. Remote-controlled versions exist, but they should also be used responsibly and with consent.
In a BDSM context, Ben Wa balls can be used as a mild tease or control game, for example when the person intentionally wears them in public. However, this should only happen very discreetly, voluntarily, and with attention to privacy, hygiene, and physical comfort. It is important to choose suitable materials, watch for pain or pressure, and stop immediately if discomfort occurs.