We did this (not this particular one) when I was in 1st grade! Teacher brought iron to school & we made Mother's Day cards.
melted crayon drawings
Mother's Day card
Cute Mother's Day Card
Melt the end of a crayon and use it to dot the canvas
Melted crayon art
By far one of the coolest ideas for old crayons pieces and glue stick containers. Melt down crayon pieces and pour into glue stick containers to harden. Big crayons that can be rolled up as they are used.
Craft Ideas for kids
Beautiful Autumn Crafts for Preschoolers