Once the crayons get to small to hold or break into pieces, most people just put them in the trash. But they can still be used.
- Collect all the little pieces: Unwrap the paper from all the pieces and brush off any dirt or pencil shavings that always seem to get stuck to the crayons. No piece will be too small for this project.
- Sort the pieces: It is not necessary to sort them all into exact color, but if you can put the pieces together with similar colors it will help to create something other than just browns and grays.
- Find a mold to use: Anything will work that is heatproof – mini muffin cups, chocolate molds, an ice cube tray. Be creative with your shapes.
- Prepare to make the new crayons: Put all the little pieces in to the small dish or mold you have chosen to use. Breaking them up into even smaller pieces might help (depending on your mold) to make the pieces more compact and create a larger crayon, because as it melts the air spaces between pieces will leave and the whole thing will "shrink".
- Melt the crayons: This can be done either in the oven or in the microwave. In the microwave, set the power to medium-low and put the mold into the microwave for at least 5 minutes. Once they have completely melted, allow them to cool and pop them out of the molds.
If you use the oven, turn the temperature up to about 250 degrees and allow the wax to slowly melt in the oven for 20 minutes. The key is to allow the wax to melt slowly in either melting method used.
Variation: For fun variations, try to create new colors by putting blue and green together or red and yellow. White will make any other color lighter, but black will just make a muddy grey, not a darker version of the color it is mixed with.