I sat back on the hotel bed, TV on and volume turned up, very pleased with myself. On the floor at the foot of the bed little Lena was strapped the Blue Crate, straining hard against the various ropes and arching her back as hard as she could. Even from across the room I could see the sweat glistening on her back. I unconsciously stroked a long, thin cane while I watched.
The Blue Crate wasn't the most beautiful piece of equipment I owned, but it worked well and was very portable. Lena was attached to it by two leather straps which bound her just above the knees. From this kneeling position she was forced to bend over the crate by small chains which ran through the front of the box and attached to her nipple clips. The clips were a work of genius, I thought. They were attached to retracting spools on the inside of the crate; thus, the attached slave COULD pull away, but not without putting some degree of pressure on the nipples.
Of course, whenever she leaned back down the chains would simply rewind around the spools. I've always liked watching slaves hooked up to the Blue Crate for the first time. As soon as they find that the nipple chains will give, they pull upright to their kneeling position. They invariably discover, however, that with their hands tied behind their backs and their knees bound to the crate, they can't go any further. Sooner or later the pull on the nipples becomes overbearing and they hunch back over into a more subservient position.
But my newest invention was the real icing and it worked perfectly with the Blue Crate. In my hobby of studying electronics I had recently discovered God's gift to the bondage and discipline scene -- mercury switches. These wonderful little devices actually checked to see how level an object was and responded accordingly with an electronic object. After reading up about these wicked little switches I had immediately run out to Radio Shack to buy a box.
A few hours in my workroom had yielded a new toy, relatively crude in construction but, if Lena was any example, perfectly functional. The mercury switch strapped firmly between Lena's petite little breasts, where it was monitoring how straight her body was held. When Lena was lying flat across the crate, the switch was level. However, whenever she pulled herself to a kneeling position, fighting the weight on her nipples, the switch activated a large vibrator protruding from my slave's beautiful little ass. The further back she stretched, the faster harder that machine buzzed, filling her ass with the sensations I knew she loved. When the pull of the nipple clips became too great, however, Lena was forced to lean back over the crate and the vibrator would stop.
