Yesterday I received a very nice Lionel 460 Piggyback Transportation Set. I saw a gent had it for sale on a FaceBook group. I had never seen one before, and looked up a YouTube video to see how it works. Needless to say, I was sold. I was not aware of a Lionel accessory that had this much action that was strictly mechanical; no electric motor or solenoid. I like it because you can plop it down on the layout and you are ready for operation. Also, I like the fact that a child can operate it using cranks and levers and not just pushing a button. This 60-year old child likes it. 
It got me wondering; what other accessories are out there that do not rely on an electrical connection to operate?
