portable roads that are easy for kids to put together and will travel easily, made out of old denim and yellow paint. velcro helps them stick to carpet - awesome idea! I'm so doing this with a pair of my old jeans!
steering wheel - paper plate with the center cut out and then painted black. Cut strips of construction paper to make cross shape in the middle. Cut out red shape for the horn and glue to center. Really cute and simple craft for transportation unit.
Science/Small Manip - Creative "racetrack" for cars. Creates a secure platform for children to race cars down the ramps. Children could extend this to use different items (balls, blocks, marbles) to see how quickly different objects roll down the ramps.