I did most of the peeling and breaking of the crayons, she arranged them (with my guidance). We have way more crayons than a household our size could ever need, and I always take them from any restaurant that gives them to us with the kids' menu.
I was inspired by this post from twelve crafts till christmas. Plus, I remember doing something similar in muffin tins with my mom when I was kid. I ordered a little silicone butterfly ice cube tray from Amazon about a month ago. It was $5, I think.
We did two batches, so now we have 20 crayons to give away and we might do more, because it was fun! In this picture, I think Cadie had already absconded with 2.