In preparation for the school year, my boss asked that I sort through our school group crayons and remove any "stubbies". Little did she know, the organization of art supplies is one of my greatest passions. So I spent the better part of a work day sorting crayons by color, distributing them into the appropriate containers, and removing the useless tiny bits. As I was finishing up and getting ready to toss the remnants, I realized I had an opportunity of the crafty variety. So I took the stubbies home and gave them a new life.
There are a few ways you can go about doing a project like this. The easiest one is to fill the molds with small crayon pieces and put them in the oven. I decided to take the more difficult route... because... I'm stupid. I told myself it was because I wanted to ensure the crayons were uniform in color, but I'm not so sure it was worth the scalded fingers. Regardless, start by removing any paper labels and sorting the pieces by color into glass containers. I had a bunch because I'm a hoarder and can't throw away a perfectly good jam jar just because it no longer contains jam! I then placed the glass containers in a pot of simmering water one by one. Wait for the wax to melt and carefully (with an oven mitt or dish towel) pour it into your mold. Let it cool, pop it out of the mold, and use your X-Acto knife to trim the edges. Aaand you're done!
One thing to take note of when selecting your molds is their depth. I thought it would be super cool to make feather crayons so you could use them like quills, but the molds are actually intended for cake decorating and produce pretty delicate crayons. They still work, they're just not exactly kid friendly... or intoxicated adult friendly I learned. I made a batch of Lego crayons also and they are much sturdier. I still think the feathers are adorable so no regrets here.