If you have ever accidentally left a crayon outdoors on a hot summer day, you probably found out that they end up misshapen or completely melted. The warmth of the sun can be used to intentionally melt old crayons and make all sorts of new things. An expensive molding gadget or another source of heat is not required. With nothing more than a metal tin or a glass jar, you can create candles or scented decorations. Use these ideas on the next hot day, and do something useful with a pile of old crayons that would otherwise end up in a trashcan.
Begin by Sorting the Crayons According to Color
If you do not want your crayon creations to end up looking like black blobs, sort them according to color. Create piles of various hues, and remove all of the labels. Do not throw the paper away. It can be used for decoupage and mosaic crafts that require colorful bits of paper.
Make Easy Crayon Candles in Glass Jars
Crayon candles in glass jars are very easy to make, especially on a hot summer day. Begin by placing a wick of the appropriate length in the center of a clean glass jar. Fill in around it with crayons in colors that will coordinate well when melted together. Place the jar on concrete or blacktop in direct sunlight. It will not take long for the sun and the surface below to begin heating up the glass and melting the crayons. They do not have to be fully melted to create a unique and colorful candle. After the wick is lit, the solid bits and pieces will melt further.
Create Hanging Shaped and Scented Decorations
Old crayons can be melted and molded into unique scented shapes using muffin tins and sunlight. Place broken crayons clean dry tins, and place them on blacktop or cement in direct sunlight. After the bits of colored wax have melted enough to stir, add a few drops of essential oil while blending them with a toothpick or skewer. Add a looped piece of jute twine to each shape before taking the tins out of the sun and allowing the shapes to set. Hang the finished decorations in a cool location where they will add color, beauty and fragrance for weeks on end.
Source: Advanced Crafting Education and Experience