I use the crayons for color - just to be pretty. You can have fun with the kids and make the candles together. You can layer the colors or make the candles all one color.Do crayon candles stink when you burn them? That sounds like a fun idea.
You wouldn't want to make candles from crayons directly - use a mix of new parafin - wax and candles for color. Only use the crayons if you have they around, no need to go and purchase (waste money) crayons for emergency candles.Do all crayons work the same? I remember when I was younger I hated how the RoseArt crayons had a different texture to them and appeared differently when used on paper than regular Crayola Crayons.