My daughter's homework assignment was to make a Polar Express train car to be used in the school's annual Polar Express Ride. I wanted my daughter to be the one supplying the ideas and doing as much of the work as she could. When I was a teacher I always enjoyed seeing projects that the parents had a hand in but overall were made by the student. I think we accomplished that. I stuck on boxes and used the hot glue gun. She handed me the pieces and helped me decide where we should place things. I found a sample photo on line and we looked at it while we assembled her train.
This is the basic shape all hot glued and taped together.
I made the front of the train by taping two pieces of card stock together. Then I rolled them up and taped them into a cylinder. I clipped the end so I could attach it to the main box. This wasn't something my daughter could do by herself.