I had purchased a junk tin train like the one pictured below to see if the accordion covers on it could be modified for a Plarail but I felt they were a might too short. They are only like a oblong ball that were placed in the recesses of the ends of the cars and freely moved. It was a neat way to do it and I think something like it could work for Plarail, but Plarail would have to recess the ends which wouldn't be much of a problem I would think.
![[Image: 7f91033907804f4506ce271074725133.jpg]](https://i.postimg.cc/f3CT6zTq/7f91033907804f4506ce271074725133.jpg)