Further explanation into this category is not needed. These articles can provide a variety of sensations, from stimulation to pain. Some of them are attachable to bodies, others are based on touch, or can be clipped on healed piercings.
Magnets to create pressure on soft tissues.
Clothpin clamps for various body parts use - shiny surface, strong effect.
Nipple clamps with adjustable pressure screws
Violet wand is an electric toy to stimulate nerve endings.
The metal ring on the penis or testicles - magnetic
Extremely strong clamps
Clover clamps with a massive nipples extension.
Atypical, but not unknown variant of nippleclamps.
The metal ring on the penis or testicles - rounded
The metal ring on the penis and testicles
Tongue forceps - steel
Strong nipple clamps connected with chain.
Steel weights with hole for hook or carbine.