Great thread idea! I know that you can find a wooden leg named Smith (a reference to a joke in Mary Poppins) near the Frontierland train station @ the Magic Kingdom. I've heard that it's not there anymore, though. I hope that's not true!!
When you are walking around in the MK, you actually are on the second level. There is a whole another level underneath the MK (the Utilidor) that is used by the CMs.