This is what happens when you leave guys alone in a machine shop with way too much times on their hands. (Either that, or it's a secret MIT design contest that they'll never write about in the local newspaper.) These guys have built various types of machines that do the job of your little vibrating Silver bullet…enhanced to the nth power! Imagine pedal-powered dildoes, power drill dildoes, rocking chair dildoes…and you get the idea. Actually, these guys probably had the time to build these machines because they knew their wives and girlfriends would be very happy when they were finished!