I made crayon shavings using a vegetable peeler. I arranged a sheet of baking paper. I put some newspapers and a kitchen towel under it as we needed to use the iron later.
Then Defne arranged them on the paper to her hearts content.
Then I folded over the wax paper and ironed it on a low setting. We observed how the crayons melted. A few minutes later, when it was cool enough for Defne to handle it, she peeled the paper and voila!