SPREADER BARS & YOKES
Spreaders and yokes are extremely useful for pushing your bondage scene to a higher level of intensity. With a solid bar of metal between their legs or cuffed to their arms, the submissive is forced into exactly the right position to have their most tender bits stimulated, played with, or punished, depending on the mood of the dominant.
Yokes take your standard spreader bar a step further: The bar connects to a collar in front, back, or on the sides, so that the sub's hands and posture are equally restricted. Even a brief look at should inspire some ideas for prison or office bondage scenarios.