To do this project you need the following:
ironing board (or other appropriate surface for ironing)
crayons (grated or shaved)
1. Grate the crayons - I highly recommend making individual piles of each color.
2. Cut off a piece of wax paper - 12"x12" is a good size.
3. Fold the wax paper in half and open it again.
4. Sprinkle a light layer of shaved/grated crayons pieces on one side of the wax paper, staying clear of the edges.
5. Fold the wax paper in half again and fold all the edges closed. (1/2 to 3/4 of an inch is good.)
6. Place wax paper between two pieces of parchment paper to prevent wax from melting and sticking onto the ironing board (or whatever surface you're using to iron the item on) and the iron.
7. Run the iron across the parchment paper until the crayon has melted.
8. Hang wax paper to cool and then cut into desired shape.
This was a lot of fun and they look very cool. One note, if you decide to make these for yourself, if the crayon shavings/gratings aren't equally distributed, the item will lean to whatever side is heavier should you choose to hang them. (See orange heart in the third picture from the top.) I plan on making clover leaves for St. Patrick's Day next month.