Rachel shared a tutorial for these Crayon Candles on the blog, Adventures in Making. I think this is a fantastic way to use up broken and leftover crayon pieces. The colors can easily be customized, of course, and you could even do the candles just one color instead of the stripes. Although, I personally like the color blocked trend.
You don’t need a ton of supplies, which is nice. Get the DIY here: Crayon Candles.