Crayon heart card Since it was a gloomy weekend, the kids and I made some melted heart crayons for my first-grader’s Valentine’s Day cards. If you haven’t ever tried this project, it’s simple with great results and is a nice way to recycle broken crayons. We followed the directions from Marie at Make and Takes. The only advice I have is that the brighter colors look much better, so hide the browns, blacks and dark blues from your kids. I also used a knife on one batch to cut the crayons into even smaller bits, which I think worked well.