Melted Crayons in the Back Seat Window...

Ahhh.. the great reason we have kids is for all the joy and love they give us and then there's the creative ways to figure out how to solve problems you never thought you would every have to solve. Yesterday we went to the park and I noticed there were crayons in the back window on the ledge. On further inspection they were MELTED to the fabric on that ledge.....

Hmm still haven't figured out how to solve this problem as of yet......the material is looking as colorful as Joseph's technicolor dreamcoat. Any suggestions!?!?