Project cost:
24 pack crayons – 40 cents
8×10 blank canvas – $3
We started out arranging the crayons into a rainbow and gluing them onto the top of the canvas with E-6000 glue (which I already had a tube of, for making hair flowers and bindis). The original inspiration for this claimed that using a hair dryer to melt the crayons was the way to go, but that was a big no in our experience: the wax did melt, but it also blew around in ways that did not look awesome on the canvas. We needed another way to melt the wax.
So I built a prop out of a 9×11 pan (one that’s old and rusty and never gets used without being lined with aluminum foil these days) and an upturned loaf pan. I put aluminum foil in the 9×11 pan – in future, I would also put some on the loaf pan behind it because a few drips of wax did go down the back of the canvas. There was quite a bit of wax in the 9×11 pan so the foil = definitely a good idea. Once I had it propped up nicely, I set the oven to 150 – the lowest temperature – and popped the whole shebang in.
And it worked beautifully.
Here’s the results, still on the prop:


And the results hanging on the wall in the boys’ room:

Interesting how the reds melt so differently, eh? We really liked this project. Fun and easy and cheap!
Tips for this project:
*If you use more than 24 crayons, just lay them all out in a row and measure how much space they take so you know what size canvas to buy.
*Use the foil lining liberally to protect whatever you use as a prop. It peels right off if any wax sticks it to the canvas.
*Once the wax is melted to your preference, just leave it on the prop to harden up. After it’s hardened, break off any wax that got around the edges of the canvas so it will hang nicely.
*Hang it carefully – it can leave crayon marks on your wall if you’re not watching closely.