We have a lot of them that are made up. One of my kids favorite is "roundabout". Not the kind on the road but the hay bales that are the big round ones, These are big animals and have herds of them when we drive down the road. Another is the big orange barrels for construction. My dad drove for Schnieder trucking so we called them Schnieder eggs (trucks hatch from them) the small skinny ones where Schnieder bitty baby bottles. When we are at the beach and see a floating log it is a ranagator. I could probably go on and on but we had lots of long road trips and got pretty creative.